68605721 is an odd 8-digits composite number following 68605720
and preceding 68605722 . In scientific notation, it is written as 6.8605721 × 10^7.
The sum of its digits is 35. It has a total of 2 prime factors and 4 positive divisors.
There are 68530944 positive integers (up to 68605721) that are relatively prime to 68605721.
68605721 has 4 divisors, whose sum is 68680500
The reverse of 68605721 is 12750686
Previous prime number is 929
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 35
Digital Root 8
Name
sixty-eight million six hundred five thousand seven hundred twenty-one
Scientific notation
6.8605721 × 10^7
Engineering notation
6.8605721 × 10^6
Prime Factorization
929 × 73849
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
68605721
Product of the distinct prime numbers
The prime factorization of 68605721 is 929 × 73849.
Since it has a total of 2 prime factors.
4 , 8 , 1 , 57 , 330 , 747 , 397 , 4113 , 48559 , 67228 , 139206 , 140601 , 9581164 , 2428994 , 51560025 , 50636615 , 702709870 , 784558343 , 8649254956 , 6409111471
n×2
137211442
n×3
205817163
n×4
274422884
n×5
343028605
n÷2
34302860.5
n÷3
22868573.666667
n÷3
17151430.25
n÷5
13721144.2
n2
4706744953929841
n3
3.2290963112747E+23
n4
2.2153448061344E+31
n5
1.5198532768846E+39
2 √n
8282.8570553886
3 √n
409.37386283312
4 √n
91.010203029048
5 √n
36.920881937381
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
-68605720
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 68605721 can be divided by 4 positive divisors.
The sum of these divisors (counting 68605721) is 1, the average is 0.25.
Base
System
Value
2
Binary
100000101101101011100011001
3
Ternary
11210002112100122
4
Quaternary
10011231130121
5
Quinary
120030340341
6
Senary
10450243025
8
Octal
405553431
10
Decimal
68605721
12
Duodecimal
1ab86475
16
Hexadecimal
416d719
20
Vigesimal
118fe61
36
Base36
14ugih
md5
5588de7c391e714ae21f464e044a84e8
sha1
5802675c11ba89d2d2a049d0fd1c28c17219a67e
sha256
d9f91748a46b84d12025afac3d4432550facc3236081ea9ee9911fee19f5b6d3
sha512
9d7c08a72f7b297066d09d2b6f068b568ea294c94700a28185693d593d257fd2c93c40be3aff659d8d763afbdd5b74e643c1a36ad15d6058586ca6bb3bbb4a9d
ripemd-160
f5e6c828894a7a9831d1b4f5d440854260d70c5b
Diameter
137211442
Circumference
431062458.17566
Area
1.4786675369587E+16
Volume
1.3526006998979E+24
Surface area
5.9146701478347E+16
Circumference
431062458.17566
Perimeter
274422884
Area
4706744953929841
Diagonal
97023141.094585
Surface area
28240469723579046
Volume
3.2290963112747E+23
Space diagonal
118828594.4619
Perimeter
205817163
Area
2.0380803496187E+15
Altitude
59414297.230948
Surface area
2.0380803496187E+15
Volume
3.8055264980113E+22
Height
32341047.031528