68561661 is an odd 8-digits composite number following 68561660
and preceding 68561662 . In scientific notation, it is written as 6.8561661 × 10^7.
The sum of its digits is 39. It has a total of 3 prime factors and 8 positive divisors.
There are 39120624 positive integers (up to 68561661) that are relatively prime to 68561661.
68561661 has 8 divisors, whose sum is 71931904
The reverse of 68561661 is 16616586
Previous prime number is 823
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3
Name
sixty-eight million five hundred sixty-one thousand six hundred sixty-one
Scientific notation
6.8561661 × 10^7
Engineering notation
6.8561661 × 10^6
Prime Factorization
21 × 823 × 3967
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
68561661
Product of the distinct prime numbers
The prime factorization of 68561661 is 21 × 823 × 3967.
Since it has a total of 3 prime factors.
9 , 3 , 57 , 31 , 11 , 848 , 6956 , 4166 , 38192 , 24809 , 332525 , 76736 , 3907986 , 6308782 , 57953388 , 97598227 , 437539091 , 837923274 , 6641457901 , 2636670051
n×2
137123322
n×3
205684983
n×4
274246644
n×5
342808305
n÷2
34280830.5
n÷3
22853887
n÷3
17140415.25
n÷5
13712332.2
n2
4700701359078921
n3
3.2228789304341E+23
n4
2.2096593267246E+31
n5
1.5149791368438E+39
2 √n
8280.1969179483
3 √n
409.28620797111
4 √n
90.995587354268
5 √n
36.916138449274
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-68561660
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 68561661 can be divided by 8 positive divisors.
The sum of these divisors (counting 68561661) is 1, the average is 0.125.
Base
System
Value
2
Binary
100000101100010101011111101
3
Ternary
11210000021220210
4
Quaternary
10011202223331
5
Quinary
120022433121
6
Senary
10445303033
8
Octal
405425375
10
Decimal
68561661
12
Duodecimal
1ab64a79
16
Hexadecimal
4162afd
20
Vigesimal
118a431
36
Base36
14tiil
md5
06bc62f6b83a36dd46c72ef1212ca23d
sha1
44311430f440e6c0040a2c727e1d8a43dcd66941
sha256
885f6b28361d0665742055b4fc0e019e4b12b8d1cd372da3d8bfe16ddad2d177
sha512
864d8f267ac3012c223951ef3b6456cfb8310d17c35d0a7d9bdd230ca42a093bdd5869bd16f8a612d6d12d4e5732f4854765fe956002811f6318728af63e4e95
ripemd-160
17c98a613ee5dfece806fb2632cf29f2efa2c6e0
Diameter
137123322
Circumference
430785621.03103
Area
1.4767688856402E+16
Volume
1.3499963695015E+24
Surface area
5.9070755425608E+16
Circumference
430785621.03103
Perimeter
274246644
Area
4700701359078921
Diagonal
96960830.845027
Surface area
28204208154473526
Volume
3.2228789304341E+23
Space diagonal
118752280.30331
Perimeter
205684983
Area
2.0354633962832E+15
Altitude
59376140.151657
Surface area
2.0354633962832E+15
Volume
3.798199244422E+22
Height
32320276.948342