645638823 (number)

645638823 is an odd 9-digits composite number following 645638822 and preceding 645638824. In scientific notation, it is written as 6.45638823 × 10^8. The sum of its digits is 45. It has a total of 4 prime factors and 16 positive divisors. There are 418180320 positive integers (up to 645638823) that are relatively prime to 645638823.

Interesting facts

Basic properties

Name

Name six hundred forty-five million six hundred thirty-eight thousand eight hundred twenty-three

Notation

Scientific notation 6.45638823 × 10^8
Engineering notation 6.45638823 × 10^6

Prime Factorization of 645638823

Prime Factorization 9 × 249 × 61 × 4723

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 645638823
Product of the distinct prime numbers

The prime factorization of 645638823 is 9 × 249 × 61 × 4723. Since it has a total of 4 prime factors.

Most popular turbo-numbers

9, 10, 35, 32, 689, 733, 6617, 8591, 21011, 56571, 691686, 972569, 3468632, 8602049, 82484083, 28623396, 703634384, 101445765, 6044155398, 3189616177

Basic calculations (n = 645638823)

Multiplication

n×y
n×2 1291277646
n×3 1936916469
n×4 2582555292
n×5 3228194115

Division

n÷y
n÷2 322819411.5
n÷3 215212941
n÷3 161409705.75
n÷5 129127764.6

Exponentiation

ny
n2 416849489764825329
n3 2.6913421393991E+26
n4 1.737634971172E+35
n5 1.1218845975911E+44

Nth Root

y√n
2√n 25409.42390138
3√n 864.29741159667
4√n 159.4033371714
5√n 57.809328857527

Divisors of 645638823

1, 9, 61, 249, 549, 2241, 4723, 15189, 42507, 136701, 288103, 1176027, 2592927, 10584243, 71737647, 645638823

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -645638822
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 645638823 can be divided by 16 positive divisors. The sum of these divisors (counting 645638823) is 1, the average is 0.0625.

Base conversion 645638823

Base System Value
2 Binary 100110011110111010101010100111
3 Ternary 1122222212211222000
4 Quaternary 212132322222213
5 Quinary 2310240420243
6 Senary 144022140343
8 Octal 4636725247
10 Decimal 645638823
12 Duodecimal 1602816b3
16 Hexadecimal 267baaa7
20 Vigesimal a1f4h13
36 Base36 aoea3r

Cryptographic Hash Functions

md5 e0313c6490ec047205cd5d46896b8b94
sha1 abad11319000a44d90b469307d5c2bb2bd6665f0
sha256 ebd2ce4d600d6932c49d7d3292304feda64d4f31f708f2629c601d9678fbf15f
sha512 c9da56df2fc4df5119419aedd4fd4be0ddb345671f6c671dc7072e758f8680d01b934b9fd1433520a7d59ee77a54dbcc20d85baad785293c6b2defa2c340d155
ripemd-160 339f3f725a73560f6b726d143d3ab208fbb9f9e1

645638823 as geometric shapes

Circle

Radius = n
Diameter 1291277646
Circumference 4056668366.4183
Area 1.3095712946978E+18

Sphere

Radius = n
Volume 1.1273467591244E+27
Surface area 5.2382851787913E+18
Circumference 4056668366.4183

Square

Length = n
Perimeter 2582555292
Area 416849489764825329
Diagonal 913071179.8812

Cube

Length = n
Surface area 2501096938588951974
Volume 2.6913421393991E+26
Space diagonal 1118279244.775

Equilateral Triangle

Length = n
Perimeter 1936916469
Area 1.8050112384546E+17
Altitude 559139622.38748

Triangular Pyramid

Length = n
Surface area 1.8050112384546E+17
Volume 3.1717771287704E+25
Height 304357059.9604