643889968 (number)

643889968 is an even 9-digits composite number following 643889967 and preceding 643889969. In scientific notation, it is written as 6.43889968 × 10^8. The sum of its digits is 61. It has a total of 6 prime factors and 20 positive divisors. There are 307947200 positive integers (up to 643889968) that are relatively prime to 643889968.

Interesting facts

Basic properties

Name

Name six hundred forty-three million eight hundred eighty-nine thousand nine hundred sixty-eight

Notation

Scientific notation 6.43889968 × 10^8
Engineering notation 6.43889968 × 10^6

Prime Factorization of 643889968

Prime Factorization 2 × 2 × 2 × 2 × 23 × 1749701

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 80486246
Product of the distinct prime numbers

The prime factorization of 643889968 is 2 × 2 × 2 × 2 × 23 × 1749701. Since it has a total of 6 prime factors.

Most popular turbo-numbers

8, 6, 23, 20, 784, 472, 9077, 7487, 78875, 56672, 239557, 64913, 1776522, 907011, 37449134, 15490852, 159326336, 471624045, 8081271850, 6879983527

Basic calculations (n = 643889968)

Multiplication

n×y
n×2 1287779936
n×3 1931669904
n×4 2575559872
n×5 3219449840

Division

n÷y
n÷2 321944984
n÷3 214629989.33333
n÷3 160972492
n÷5 128777993.6

Exponentiation

ny
n2 414594290891041024
n3 2.6695310469482E+26
n4 1.7188842603945E+35
n5 1.1067723314211E+44

Nth Root

y√n
2√n 25374.987054184
3√n 863.51632593661
4√n 159.2952825861
5√n 57.777977008977

Divisors of 643889968

1, 2, 4, 8, 16, 23, 46, 92, 184, 368, 1749701, 3499402, 6998804, 13997608, 27995216, 40243123, 80486246, 160972492, 321944984, 643889968

20 divisors

τ Total Divisors 20
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -643889967
Sum of the proper positive divisors of n
A Arithmetic Mean 0.05
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 20
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 643889968 can be divided by 20 positive divisors. The sum of these divisors (counting 643889968) is 1, the average is 0.05.

Base conversion 643889968

Base System Value
2 Binary 100110011000001111101100110000
3 Ternary 1122212120222222121
4 Quaternary 212120033230300
5 Quinary 2304313434333
6 Senary 143520444024
8 Octal 4630175460
10 Decimal 643889968
12 Duodecimal 15b779614
16 Hexadecimal 2660fb30
20 Vigesimal a1464i8
36 Base36 ancsog

Cryptographic Hash Functions

md5 8eeebec066b80425f3e98c9c09f62c30
sha1 7620a88ff3b4b05e9fcc97b47646d7a23b13b295
sha256 d0d261be3aaaaa5a5bb559aac3f52c8da87fa98128134001aebc18f6322c5ba2
sha512 c6eef461166c356215f7f167dd3cc61625969149077ba01d2524dc4ccff2adf52dc88d8a8fde377d716009f18146faf7939e7bc0577fd003c13a21bd46432eec
ripemd-160 6308270994a5bf98367cf9ac6b35a734d3054521

643889968 as geometric shapes

Circle

Radius = n
Diameter 1287779936
Circumference 4045679986.3779
Area 1.3024863784836E+18

Sphere

Radius = n
Volume 1.118210550083E+27
Surface area 5.2099455139343E+18
Circumference 4045679986.3779

Square

Length = n
Perimeter 2575559872
Area 414594290891041024
Diagonal 910597925.42158

Cube

Length = n
Surface area 2487565745346246144
Volume 2.6695310469482E+26
Space diagonal 1115250139.0599

Equilateral Triangle

Length = n
Perimeter 1931669904
Area 1.7952459408782E+17
Altitude 557625069.52995

Triangular Pyramid

Length = n
Surface area 1.7952459408782E+17
Volume 3.1460725098084E+25
Height 303532641.80719