Math question: What is the sum of the digits in the number 1684?

To find the sum of the digits in 1684, we add each digit together: 1 + 6 + 8 + 4 = 19.

Math question: What is the sum of the prime factors of the number 1684?

To find the prime factors of 1684, we start with dividing it by the smallest prime number, 2. We get 842. Again, dividing by 2, we get 421. As 421 is prime, we cannot divide further. So, the prime factors of 1684 are 2 and 421. The sum of these factors is 2 + 421 = 423.

Question: What is the largest prime number less than 1684 that can be expressed as the sum of two different prime numbers?

To find the largest prime number less than 1684 that can be expressed as the sum of two different prime numbers, we start by finding all prime numbers less than 1684. The prime numbers less than 1684 are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313, 317, 331, 337, 347, 349, 353, 359, 367, 373, 379, 383, 389, 397, 401, 409, 419, 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 503, 509, 521, 523, 541, 547, 557, 563, 569, 571, 577, 587, 593, 599, 601, 607, 613, 617, 619, 631, 641, 643, 647, 653, 659, 661, 673, 677, 683, 691, 701, 709, 719, 727, 733, 739, 743, 751, 757, 761, 769, 773, 787, 797, 809, 811, 821, 823, 827, 829, 839, 853, 857, 859, 863, 877, 881, 883, 887, 907, 911, 919, 929, 937, 941, 947, 953, 967, 971, 977, 983, 991, and 997. Now, we will check each of these prime numbers to see if they can be expressed as the sum of two different prime numbers. We find that the largest prime number less than 1684 that fulfills this condition is 1663, which can be expressed as the sum of 823 and 839. Therefore, the answer is 1663.

Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

1684 (number)

1684 is an even 4-digits composite number following 1683 and preceding 1685. In scientific notation, it is written as 1.684 × 10^3. The sum of its digits is 19. It has a total of 3 prime factors and 6 positive divisors. There are 840 positive integers (up to 1684) that are relatively prime to 1684.

Interesting facts

1684 has 6 divisors, whose sum is 2954
The reverse of 1684 is 4861
Previous prime number is 2

Basic properties

Is Prime? no
Number parity even
Number length 4
Sum of Digits 19
Digital Root 1

Name

Name	one thousand six hundred eighty-four

Notation

Scientific notation	1.684 × 10^3
Engineering notation	1.684 × 10^3

Prime Factorization of 1684

Prime Factorization 2 × 2 × 421

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	842	Product of the distinct prime numbers

The prime factorization of 1684 is 2 × 2 × 421. Since it has a total of 3 prime factors.

Most popular turbo-numbers

6, 1, 75, 34, 271, 738, 5052, 9004, 74385, 89646, 179000, 351110, 7950268, 391022, 90429763, 82174514, 341205413, 393525719, 2930661603, 9743649157

Basic calculations (n = 1684)

Multiplication

n×y

n×2	3368
n×3	5052
n×4	6736
n×5	8420

Division

n÷y

n÷2	842
n÷3	561.33333333333
n÷3	421
n÷5	336.8

Exponentiation

n^y

n²	2835856
n³	4775581504
n⁴	8042079252736
n⁵	13542861461607424

Nth Root

^y√n

²√n	41.036569057366
³√n	11.897271224232
⁴√n	6.405979164606
⁵√n	4.4184344608072

Divisors of 1684

1, 2, 4, 421, 842, 1684

6 divisors

τ	Total Divisors	6	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-1683	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.16666666666667	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	1	Returns the nth root of the product of n divisors
H	Harmonic Mean	6	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 1684 can be divided by 6 positive divisors. The sum of these divisors (counting 1684) is 1, the average is 0.16666666666667.

Base conversion 1684

Base	System	Value
2	Binary	11010010100
3	Ternary	2022101
4	Quaternary	122110
5	Quinary	23214
6	Senary	11444
8	Octal	3224
10	Decimal	1684
12	Duodecimal	b84
16	Hexadecimal	694
20	Vigesimal	444
36	Base36	1as

Cryptographic Hash Functions

md5	1ef91c212e30e14bf125e9374262401f
sha1	388a751a4594df57a123a6dee41a01aeaec1ea85
sha256	2f351206009bd31541b52e772dab244c7331af91be90d333165f7e77cde33805
sha512	11b847620e83cb54cccd51631814fe95c1fcd8cf09f2826a78918a6139461e95245cbf50bbb49036a6ae91eab45789463271ff4396b4499d664d492d937f2d83
ripemd-160	bdbdc01bff97bbd19402cf4478de867e7833d0ac

1684 as geometric shapes

Circle

Radius = n

Diameter	3368
Circumference	10580.88405729
Area	8909104.3762385

Sphere

Radius = n

Volume	20003909026.114
Surface area	35636417.504954
Circumference	10580.88405729

Square

Length = n

Perimeter	6736
Area	2835856
Diagonal	2381.5356390363

Cube

Length = n

Surface area	17015136
Volume	4775581504
Space diagonal	2916.773559946

Equilateral Triangle

Length = n

Perimeter	5052
Area	1227961.6687373
Altitude	1458.386779973

Triangular Pyramid

Length = n

Surface area	1227961.6687373
Volume	562807677.59791
Height	793.8452130121