81660897 (number)

81660897 is an odd 8-digits composite number following 81660896 and preceding 81660898. In scientific notation, it is written as 8.1660897 × 10^7. The sum of its digits is 45. It has a total of 4 prime factors and 16 positive divisors. There are 51662688 positive integers (up to 81660897) that are relatively prime to 81660897.

Interesting facts

Basic properties

Name

Name eighty-one million six hundred sixty thousand eight hundred ninety-seven

Notation

Scientific notation 8.1660897 × 10^7
Engineering notation 8.1660897 × 10^6

Prime Factorization of 81660897

Prime Factorization 3 × 177 × 29 × 5303

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 81660897
Product of the distinct prime numbers

The prime factorization of 81660897 is 3 × 177 × 29 × 5303. Since it has a total of 4 prime factors.

Most popular turbo-numbers

3, 1, 35, 18, 576, 622, 4143, 4469, 58580, 81091, 76093, 863724, 163256, 3595386, 57576550, 37276822, 326835546, 404602139, 3677767377, 5692525581

Basic calculations (n = 81660897)

Multiplication

n×y
n×2 163321794
n×3 244982691
n×4 326643588
n×5 408304485

Division

n÷y
n÷2 40830448.5
n÷3 27220299
n÷3 20415224.25
n÷5 16332179.4

Exponentiation

ny
n2 6668502098844609
n3 5.4455586303803E+23
n4 4.4468920242295E+31
n5 3.6313719156073E+39

Nth Root

y√n
2√n 9036.6419094706
3√n 433.84844850413
4√n 95.061253460443
5√n 38.229870705012

Divisors of 81660897

1, 3, 29, 87, 177, 531, 5133, 5303, 15399, 15909, 153787, 461361, 938631, 2815893, 27220299, 81660897

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 -81660896
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 81660897 can be divided by 16 positive divisors. The sum of these divisors (counting 81660897) is 1, the average is 0.0625.

Base conversion 81660897

Base System Value
2 Binary 100110111100000101111100001
3 Ternary 12200122210200200
4 Quaternary 10313200233201
5 Quinary 131401122042
6 Senary 12034135413
8 Octal 467405741
10 Decimal 81660897
12 Duodecimal 23421569
16 Hexadecimal 4de0be1
20 Vigesimal 15a7c4h
36 Base36 1cm9y9

Cryptographic Hash Functions

md5 9ed7662c1a1af86d99b0dae27e304a82
sha1 6ab12fb38f3e90670165c3c4412284f7a148e36c
sha256 1bb8efd1ce024f0303722293ecd47514441950babcf3ce5617671a984a83f117
sha512 14fb59735b882e3e737cc3b65ed9507917f0281f6c6c69afa3dc29595b25df6047d1d69b4096e63a4750cf2dd8f4d17f9f0d6211416db9bd80d808bc624620f5
ripemd-160 17bd76d0464ce901c0bea286938365c33c3f7a14

81660897 as geometric shapes

Circle

Radius = n
Diameter 163321794
Circumference 513090548.20151
Area 2.0949717204178E+16

Sphere

Radius = n
Volume 2.2810302650527E+24
Surface area 8.3798868816713E+16
Circumference 513090548.20151

Square

Length = n
Perimeter 326643588
Area 6668502098844609
Diagonal 115485948.05295

Cube

Length = n
Surface area 40011012593067654
Volume 5.4455586303803E+23
Space diagonal 141440822.59565

Equilateral Triangle

Length = n
Perimeter 244982691
Area 2.8875461113946E+15
Altitude 70720411.297824

Triangular Pyramid

Length = n
Surface area 2.8875461113946E+15
Volume 6.4176523914848E+22
Height 38495316.017651