668727981 (number)

668727981 is an odd 9-digits composite number following 668727980 and preceding 668727982. In scientific notation, it is written as 6.68727981 × 10^8. The sum of its digits is 54. It has a total of 3 prime factors and 8 positive divisors. There are 445818492 positive integers (up to 668727981) that are relatively prime to 668727981.

Interesting facts

Basic properties

Name

Name six hundred sixty-eight million seven hundred twenty-seven thousand nine hundred eighty-one

Notation

Scientific notation 6.68727981 × 10^8
Engineering notation 6.68727981 × 10^6

Prime Factorization of 668727981

Prime Factorization 9 × 27 × 2751967

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 668727981
Product of the distinct prime numbers

The prime factorization of 668727981 is 9 × 27 × 2751967. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 668727981)

Multiplication

n×y
n×2 1337455962
n×3 2006183943
n×4 2674911924
n×5 3343639905

Division

n÷y
n÷2 334363990.5
n÷3 222909327
n÷3 167181995.25
n÷5 133745596.2

Exponentiation

ny
n2 447197112572336361
n3 2.9905322219953E+26
n4 1.9998525749303E+35
n5 1.3373573747308E+44

Nth Root

y√n
2√n 25859.775347052
3√n 874.47990032917
4√n 160.80974891794
5√n 58.217010345131

Divisors of 668727981

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -668727980
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 668727981 can be divided by 8 positive divisors. The sum of these divisors (counting 668727981) is 1, the average is 0.125.

Base conversion 668727981

Base System Value
2 Binary 100111110110111111101010101101
3 Ternary 1201121022220100000
4 Quaternary 213312333222231
5 Quinary 2332143243411
6 Senary 150205054513
8 Octal 4766775255
10 Decimal 668727981
12 Duodecimal 167b57439
16 Hexadecimal 27dbfaad
20 Vigesimal a8jajj1
36 Base36 b255t9

Cryptographic Hash Functions

md5 4b00b975b723e700b345ce360a4ab496
sha1 bd196c76a519748327de3edb390558bf0e44614e
sha256 09079b7426355811d0c4410046e3f00f3bba0693f8f1cac60ab30f19b7b7d451
sha512 c845f7580128c6fc04d6f7df34ff2e21d34c4a52c4d18420f42806d4ca855d2d77f18268f93d522241b7e961066ee9042d8db877939ddcafe632a696382d742d
ripemd-160 06259ff552afa39ad5792dde17dcc27f749714c5

668727981 as geometric shapes

Circle

Radius = n
Diameter 1337455962
Circumference 4201741824.7191
Area 1.4049111635638E+18

Sphere

Radius = n
Volume 1.2526712078592E+27
Surface area 5.6196446542553E+18
Circumference 4201741824.7191

Square

Length = n
Perimeter 2674911924
Area 447197112572336361
Diagonal 945724180.26858

Cube

Length = n
Surface area 2683182675434018166
Volume 2.9905322219953E+26
Space diagonal 1158270839.535

Equilateral Triangle

Length = n
Perimeter 2006183943
Area 1.9364202999335E+17
Altitude 579135419.76748

Triangular Pyramid

Length = n
Surface area 1.9364202999335E+17
Volume 3.5243760225496E+25
Height 315241393.42286