64947981 (number)

64947981 is an odd 8-digits composite number following 64947980 and preceding 64947982. In scientific notation, it is written as 6.4947981 × 10^7. The sum of its digits is 48. It has a total of 4 prime factors and 16 positive divisors. There are 36499680 positive integers (up to 64947981) that are relatively prime to 64947981.

Interesting facts

Basic properties

Name

Name sixty-four million nine hundred forty-seven thousand nine hundred eighty-one

Notation

Scientific notation 6.4947981 × 10^7
Engineering notation 6.4947981 × 10^6

Prime Factorization of 64947981

Prime Factorization 21 × 7 × 61 × 7243

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 64947981
Product of the distinct prime numbers

The prime factorization of 64947981 is 21 × 7 × 61 × 7243. Since it has a total of 4 prime factors.

Most popular turbo-numbers

6, 9, 67, 76, 793, 162, 8236, 33, 51889, 89634, 741263, 39557, 8055217, 2303659, 65057495, 67935285, 184410148, 867651407, 1536568736, 8746686556

Basic calculations (n = 64947981)

Multiplication

n×y
n×2 129895962
n×3 194843943
n×4 259791924
n×5 324739905

Division

n÷y
n÷2 32473990.5
n÷3 21649327
n÷3 16236995.25
n÷5 12989596.2

Exponentiation

ny
n2 4218240235976361
n3 2.7396618669963E+23
n4 1.779355068841E+31
n5 1.1556551920334E+39

Nth Root

y√n
2√n 8059.0310211588
3√n 401.96528870359
4√n 89.772106030542
5√n 36.518516854412

Divisors of 64947981

1, 7, 21, 61, 147, 427, 1281, 7243, 8967, 50701, 152103, 441823, 1064721, 3092761, 9278283, 64947981

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 -64947980
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 64947981 can be divided by 16 positive divisors. The sum of these divisors (counting 64947981) is 1, the average is 0.0625.

Base conversion 64947981

Base System Value
2 Binary 11110111110000011100001101
3 Ternary 11112012200212210
4 Quaternary 3313300130031
5 Quinary 113111313411
6 Senary 10240021033
8 Octal 367603415
10 Decimal 64947981
12 Duodecimal 19901779
16 Hexadecimal 3df070d
20 Vigesimal 105i9j1
36 Base36 12o26l

Cryptographic Hash Functions

md5 314e0745748132de4a6448b1de65adab
sha1 5e0e07afe950c88b39b1329491c5316554e56f68
sha256 3c04e32fb8e8474c4b92da8526ede4df6932d615e1959b2e5b84fc725d1c36a9
sha512 52753a9ac859a41840b57a6a73f584a39687ce0ce82a71c219b653214fbfb51919fd99bff3b4797e9bb789220488b53b1c73dc5e2347a2cacbf921a8cea51293
ripemd-160 12538d8bc261116280d0d72d9d02b987c103ba7a

64947981 as geometric shapes

Circle

Radius = n
Diameter 129895962
Circumference 408080199.95018
Area 1.325199253642E+16

Sphere

Radius = n
Volume 1.1475868792901E+24
Surface area 5.3007970145681E+16
Circumference 408080199.95018

Square

Length = n
Perimeter 259791924
Area 4218240235976361
Diagonal 91850315.57895

Cube

Length = n
Surface area 25309441415858166
Volume 2.7396618669963E+23
Space diagonal 112493202.94102

Equilateral Triangle

Length = n
Perimeter 194843943
Area 1.8265516018106E+15
Altitude 56246601.470509

Triangular Pyramid

Length = n
Surface area 1.8265516018106E+15
Volume 3.2287224738521E+22
Height 30616771.85965