668801981 (number)

668801981 is an odd 9-digits composite number following 668801980 and preceding 668801982. In scientific notation, it is written as 6.68801981 × 10^8. The sum of its digits is 47. It has a total of 3 prime factors and 8 positive divisors. There are 595296768 positive integers (up to 668801981) that are relatively prime to 668801981.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 6.68801981 × 10^8
Engineering notation 6.68801981 × 10^6

Prime Factorization of 668801981

Prime Factorization 391 × 89 × 19219

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 668801981
Product of the distinct prime numbers

The prime factorization of 668801981 is 391 × 89 × 19219. Since it has a total of 3 prime factors.

Most popular turbo-numbers

6, 7, 42, 73, 28, 633, 2900, 5330, 83896, 11520, 631714, 678309, 6401323, 9473535, 13662841, 37562939, 564751700, 788700462, 1891648134, 704621927

Basic calculations (n = 668801981)

Multiplication

n×y
n×2 1337603962
n×3 2006405943
n×4 2675207924
n×5 3344009905

Division

n÷y
n÷2 334400990.5
n÷3 222933993.66667
n÷3 167200495.25
n÷5 133760396.2

Exponentiation

ny
n2 447296089789524361
n3 2.9915251094479E+26
n4 2.00073791941E+35
n5 1.3380974839632E+44

Nth Root

y√n
2√n 25861.206101031
3√n 874.51215516106
4√n 160.81419744858
5√n 58.218298721933

Divisors of 668801981

1, 89, 391, 19219, 34799, 1710491, 7514629, 668801981

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 -668801980
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 668801981 can be divided by 8 positive divisors. The sum of these divisors (counting 668801981) is 1, the average is 0.125.

Base conversion 668801981

Base System Value
2 Binary 100111110111010001101110111101
3 Ternary 1201121110122211202
4 Quaternary 213313101232331
5 Quinary 2332203130411
6 Senary 150210425245
8 Octal 4767215675
10 Decimal 668801981
12 Duodecimal 167b92225
16 Hexadecimal 27dd1bbd
20 Vigesimal a9004j1
36 Base36 b26qwt

Cryptographic Hash Functions

md5 e0eccc324894e0a81b027befb76d2604
sha1 fe9c3a8a353bb378f96fd83136e0697d641892e2
sha256 2968c073706414ee689d52582a0fa26a03bac3f06e3473b0a8ae7a0133ea0579
sha512 ffdf711c2f72ce421fbdf4d532c6f57ae9f75778d8d18debb38e3a90c9fab75fe799a2d93b262ddbb91cb1490ad3ab8061de2f56e134da2f19d339f7bb993949
ripemd-160 ea34581808d5013f9e0652769c04b7c80f918843

668801981 as geometric shapes

Circle

Radius = n
Diameter 1337603962
Circumference 4202206780.4318
Area 1.4052221096622E+18

Sphere

Radius = n
Volume 1.2530871075828E+27
Surface area 5.6208884386488E+18
Circumference 4202206780.4318

Square

Length = n
Perimeter 2675207924
Area 447296089789524361
Diagonal 945828832.07219

Cube

Length = n
Surface area 2683776538737146166
Volume 2.9915251094479E+26
Space diagonal 1158399011.2947

Equilateral Triangle

Length = n
Perimeter 2006405943
Area 1.9368488838559E+17
Altitude 579199505.64736

Triangular Pyramid

Length = n
Surface area 1.9368488838559E+17
Volume 3.525546151634E+25
Height 315276277.3574