61639985 is an odd 8-digits composite number following 61639984
and preceding 61639986 . In scientific notation, it is written as 6.1639985 × 10^7.
The sum of its digits is 47. It has a total of 2 prime factors and 4 positive divisors.
There are 44829040 positive integers (up to 61639985) that are relatively prime to 61639985.
61639985 has 4 divisors, whose sum is 62760768
The reverse of 61639985 is 58993616
Previous prime number is 55
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 47
Digital Root 2
Name
sixty-one million six hundred thirty-nine thousand nine hundred eighty-five
Scientific notation
6.1639985 × 10^7
Engineering notation
6.1639985 × 10^6
Prime Factorization
55 × 1120727
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
61639985
Product of the distinct prime numbers
The prime factorization of 61639985 is 55 × 1120727.
Since it has a total of 2 prime factors.
10 , 1 , 3 , 1 , 396 , 427 , 4448 , 1409 , 85928 , 29844 , 280548 , 951309 , 2834875 , 517897 , 17083427 , 72777180 , 240926201 , 481096189 , 985452657 , 2634905120
n×2
123279970
n×3
184919955
n×4
246559940
n×5
308199925
n÷2
30819992.5
n÷3
20546661.666667
n÷3
15409996.25
n÷5
12327997
n2
3799487750800225
n3
2.3420036796701E+23
n4
1.4436107168481E+31
n5
8.8984142932356E+38
2 √n
7851.1136152778
3 √n
395.02159792175
4 √n
88.606510005065
5 √n
36.138698255204
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
-61639984
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 61639985 can be divided by 4 positive divisors.
The sum of these divisors (counting 61639985) is 1, the average is 0.25.
Base
System
Value
2
Binary
11101011001000110100110001
3
Ternary
11021222122011102
4
Quaternary
3223020310301
5
Quinary
111234434420
6
Senary
10041054145
8
Octal
353106461
10
Decimal
61639985
12
Duodecimal
18787355
16
Hexadecimal
3ac8d31
20
Vigesimal
j54jj5
36
Base36
10p5pt
md5
d0e813b7a139d2fd83b23bd6e84f6693
sha1
9a6451dedf52eb719d3c736e3454770f57dc40ad
sha256
f66a08ec45b4e689517c5b14dbd12a71e96110717785fea093c33f825a05daf9
sha512
7f4bace1a925806b934e75458bb9581f5463b0a00b6cdd14de219569c97f70134847d87913890a35d40b9a6813ee21a3c249e0d2024e0103033071416f8ec468
ripemd-160
46b14b3d4e4ea9e2da6ac6fd67e77f2c0b90ab2a
Diameter
123279970
Circumference
387295448.08677
Area
1.1936442805318E+16
Volume
9.8101620729758E+23
Surface area
4.7745771221274E+16
Circumference
387295448.08677
Perimeter
246559940
Area
3799487750800225
Diagonal
87172102.771474
Surface area
22796926504801350
Volume
2.3420036796701E+23
Space diagonal
106763585.79778
Perimeter
184919955
Area
1.6452264567804E+15
Altitude
53381792.898892
Surface area
1.6452264567804E+15
Volume
2.7600778057643E+22
Height
29057367.590491