68 (number)

68 is an even 2-digits composite number following 67 and preceding 69. In scientific notation, it is written as 6.8 × 10^1. The sum of its digits is 14. It has a total of 3 prime factors and 6 positive divisors. There are 32 positive integers (up to 68) that are relatively prime to 68.

Interesting facts

Basic properties

Name

Name sixty-eight

Notation

Scientific notation 6.8 × 10^1
Engineering notation 6.8 × 10^0

Prime Factorization of 68

Prime Factorization 2 × 2 × 17

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 34
Product of the distinct prime numbers

The prime factorization of 68 is 2 × 2 × 17. Since it has a total of 3 prime factors.

Most popular turbo-numbers

5, 6, 20, 76, 639, 120, 4088, 5042, 8625, 10029, 196141, 571167, 5822433, 1507623, 16547837, 86819277, 826593253, 217426667, 3187529948, 7590740087

Basic calculations (n = 68)

Multiplication

n×y
n×2 136
n×3 204
n×4 272
n×5 340

Division

n÷y
n÷2 34
n÷3 22.666666666667
n÷3 17
n÷5 13.6

Exponentiation

ny
n2 4624
n3 314432
n4 21381376
n5 1453933568

Nth Root

y√n
2√n 8.2462112512353
3√n 4.0816551019173
4√n 2.8716217110259
5√n 2.325422030439

Divisors of 68

1, 2, 4, 17, 34, 68

6 divisors

τ Total Divisors 6
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -67
Sum of the proper positive divisors of n
A Arithmetic Mean 0.16666666666667
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 6
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 68 can be divided by 6 positive divisors. The sum of these divisors (counting 68) is 1, the average is 0.16666666666667.

Base conversion 68

Base System Value
2 Binary 1000100
3 Ternary 2112
4 Quaternary 1010
5 Quinary 233
6 Senary 152
8 Octal 104
10 Decimal 68
12 Duodecimal 58
16 Hexadecimal 44
20 Vigesimal 38
36 Base36 1w

Cryptographic Hash Functions

md5 a3f390d88e4c41f2747bfa2f1b5f87db
sha1 b4c96d80854dd27e76d8cc9e21960eebda52e962
sha256 a21855da08cb102d1d217c53dc5824a3a795c1c1a44e971bf01ab9da3a2acbbf
sha512 7ec8040a523b302bd6a6ee818a79fc25208f99f937fb8364444813e09498b5d31c18f67ccb7dcc79f3c3ceec724c4c726f8559319b7f0d7c3f8de26965f73b94
ripemd-160 722551b39bcc478810db6e202ae75a9a9b40afa9

68 as geometric shapes

Circle

Radius = n
Diameter 136
Circumference 427.25660088821
Area 14526.724430199

Sphere

Radius = n
Volume 1317089.6816714
Surface area 58106.897720797
Circumference 427.25660088821

Square

Length = n
Perimeter 272
Area 4624
Diagonal 96.16652224137

Cube

Length = n
Surface area 27744
Volume 314432
Space diagonal 117.77945491468

Equilateral Triangle

Length = n
Perimeter 204
Area 2002.2507335496
Altitude 58.889727457342

Triangular Pyramid

Length = n
Surface area 2002.2507335496
Volume 37056.166570341
Height 32.05550741379