What's the sum of 6991 and the square root of the product between the digits of 6991?

To find the sum, first, we determine the product of the digits in 6991: 6 × 9 × 9 × 1 = 486. Next, we calculate the square root of 486, which is approximately 22.0454. Finally, we add 6991 and 22.0454: 6991 + 22.0454 = 7013.0454. Therefore, the sum is 7013.0454.

Math question: What is the sum of the digits of the number 6991 multiplied by 5, divided by 7, and then added to 500?

To find the sum of the digits in 6991, we add 6 + 9 + 9 + 1 which equals 25. Multiplying this by 5 gives 125. Now divide by 7 to get approximately 17.857. Finally, add this to 500 to yield 517.857 as the answer.

Math question: What is the largest prime factor of the number 6991?

To find the largest prime factor of 6991, we begin by dividing it by the smallest prime numbers. By trying out primes from 2 to the square root of 6991 (which is approximately 83.6), we find that 6991 is not divisible by 2, 3, 5, 7, 11, 13, and so on until 83. Hence, 6991 itself is a prime number. Therefore, the largest prime factor of 6991 is the number itself, 6991. (Note: In case the number given had more than one prime factor, the answer would include all prime factors.)

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

6991 (number)

6991 is an odd 4-digits prime number following 6990 and preceding 6992. In scientific notation, it is written as 6.991 × 10^3. The sum of its digits is 25. It has a total of 1 prime factors and 2 positive divisors. There are 6990 positive integers (up to 6991) that are relatively prime to 6991.

Interesting facts

6991 has 2 divisors, whose sum is 6992
The reverse of 6991 is 1996
Previous prime number is 1

Basic properties

Is Prime? yes
Number parity odd
Number length 4
Sum of Digits 25
Digital Root 7

Name

Name	six thousand nine hundred ninety-one

Notation

Scientific notation	6.991 × 10^3
Engineering notation	6.991 × 10^3

Prime Factorization of 6991

Prime Factorization 6991

Composite number

ω	Distinct Factors	1	Total number of distinct prime factors
Ω	Total Factors	1	Total number of prime factors
rad	Radical	6991	Product of the distinct prime numbers

The prime factorization of 6991 is 6991. Since it has a total of 1 prime factors.

Most popular turbo-numbers

1, 10, 62, 6, 371, 528, 8901, 2420, 44894, 87441, 101965, 915095, 5342953, 265049, 70947035, 50216527, 260752133, 581322212, 6514411411, 6149550019

Basic calculations (n = 6991)

Multiplication

n×y

n×2	13982
n×3	20973
n×4	27964
n×5	34955

Division

n÷y

n÷2	3495.5
n÷3	2330.3333333333
n÷3	1747.75
n÷5	1398.2

Exponentiation

n^y

n²	48874081
n³	341678700271
n⁴	2388675793594561
n⁵	1.669923247302E+19

Nth Root

^y√n

²√n	83.612200066737
³√n	19.121110035167
⁴√n	9.1439706947659
⁵√n	5.8736472447381

Divisors of 6991

1, 6991

2 divisors

τ	Total Divisors	2	Total number of the positive divisors of n
σ	Sum of Divisors	6992	Sum of all the positive divisors of n
s	Aliquot Sum	1	Sum of the proper positive divisors of n
A	Arithmetic Mean	3496	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	83.618179841467	Returns the nth root of the product of n divisors
H	Harmonic Mean	1.9997139588101	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 6991 can be divided by 2 positive divisors. The sum of these divisors (counting 6991) is 6992, the average is 3496.

Base conversion 6991

Base	System	Value
2	Binary	1101101001111
3	Ternary	100120221
4	Quaternary	1231033
5	Quinary	210431
6	Senary	52211
8	Octal	15517
10	Decimal	6991
12	Duodecimal	4067
16	Hexadecimal	1b4f
20	Vigesimal	h9b
36	Base36	5e7

Cryptographic Hash Functions

md5	0394ea68951e3299bcdfa75a097d7c11
sha1	792eed93e471be02b2efbef737e7c795c655a564
sha256	54033363ec6bf8d4a8d21a98cb426f1fe415802386726f3996744b7f61dd8b47
sha512	7c42f2092c0b31df075c91ab1e1200e50ccf51140bdedaba44d114e9edab94943f7f3df78a67699597e41d64d27c3e5cf00e30de21dff9ee47bb68bd0da7a270
ripemd-160	9a5428e4f704df6a81114ab844b91ac5c2b27113

6991 as geometric shapes

Circle

Radius = n

Diameter	13982
Circumference	43925.748482492
Area	153542453.82055

Sphere

Radius = n

Volume	1431220392879.3
Surface area	614169815.28221
Circumference	43925.748482492

Square

Length = n

Perimeter	27964
Area	48874081
Diagonal	9886.7670145503

Cube

Length = n

Surface area	293244486
Volume	341678700271
Space diagonal	12108.767195714

Equilateral Triangle

Length = n

Perimeter	20973
Area	21163097.866309
Altitude	6054.383597857

Triangular Pyramid

Length = n

Surface area	21163097.866309
Volume	40267220991.438
Height	3295.5890048501