655 (number)

655 is an odd 3-digits composite number following 654 and preceding 656. In scientific notation, it is written as 6.55 × 10^2. The sum of its digits is 16. It has a total of 2 prime factors and 4 positive divisors. There are 520 positive integers (up to 655) that are relatively prime to 655.

Interesting facts

Basic properties

Name

Name six hundred fifty-five

Notation

Scientific notation 6.55 × 10^2
Engineering notation 6.55 × 10^0

Prime Factorization of 655

Prime Factorization 131 × 5

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 655
Product of the distinct prime numbers

The prime factorization of 655 is 131 × 5. Since it has a total of 2 prime factors.

Most popular turbo-numbers

Basic calculations (n = 655)

Multiplication

n×y
n×2 1310
n×3 1965
n×4 2620
n×5 3275

Division

n÷y
n÷2 327.5
n÷3 218.33333333333
n÷3 163.75
n÷5 131

Exponentiation

ny
n2 429025
n3 281011375
n4 184062450625
n5 120560905159375

Nth Root

y√n
2√n 25.592967784139
3√n 8.6845456027172
4√n 5.0589492766917
5√n 3.6580383988069

Divisors of 655

1, 5, 131, 655

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -654
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 655 can be divided by 4 positive divisors. The sum of these divisors (counting 655) is 1, the average is 0.25.

Base conversion 655

Base System Value
2 Binary 1010001111
3 Ternary 220021
4 Quaternary 22033
5 Quinary 10110
6 Senary 3011
8 Octal 1217
10 Decimal 655
12 Duodecimal 467
16 Hexadecimal 28f
20 Vigesimal 1cf
36 Base36 i7

Cryptographic Hash Functions

md5 3d2d8ccb37df977cb6d9da15b76c3f3a
sha1 4dcee7f85df40fc71dcad450a6cbc55190e1253b
sha256 9f6cb78c09b22a1a10564f6be4a1784327a42ff11a10a31d355435db59f44710
sha512 dcfb386de7b5e6569b10eb9d3095af2265387ac67923d0cb8c39200a91cf5c8570a4a865657312ba53d129972a583a969801d7bca953620769313923b8dbe97c
ripemd-160 5ee04b7f699aa028652c28787b32f69090831f1a

655 as geometric shapes

Circle

Radius = n
Diameter 1310
Circumference 4115.4863762026
Area 1347821.7882064

Sphere

Radius = n
Volume 1177097695.0336
Surface area 5391287.1528254
Circumference 4115.4863762026

Square

Length = n
Perimeter 2620
Area 429025
Diagonal 926.30988335438

Cube

Length = n
Surface area 2574150
Volume 281011375
Space diagonal 1134.4932789576

Equilateral Triangle

Length = n
Perimeter 1965
Area 185773.27442931
Altitude 567.24663947881

Triangular Pyramid

Length = n
Surface area 185773.27442931
Volume 33117508.142176
Height 308.76996111813