64697981 is an odd 8-digits prime number following 64697980
and preceding 64697982 . In scientific notation, it is written as 6.4697981 × 10^7.
The sum of its digits is 50. It has a total of 1 prime factors and 2 positive divisors.
There are 64697980 positive integers (up to 64697981) that are relatively prime to 64697981.
64697981 has 2 divisors, whose sum is 64697982
The reverse of 64697981 is 18979646
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 50
Digital Root 5
Name
sixty-four million six hundred ninety-seven thousand nine hundred eighty-one
Scientific notation
6.4697981 × 10^7
Engineering notation
6.4697981 × 10^6
Prime Factorization
64697981
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
64697981
Product of the distinct prime numbers
The prime factorization of 64697981 is 64697981.
Since it has a total of 1 prime factors.
6 , 5 , 81 , 92 , 40 , 969 , 1080 , 9337 , 69185 , 45280 , 882836 , 327822 , 9407628 , 3579897 , 67099723 , 54818303 , 480112575 , 479129022 , 4938319306 , 6216817761
n×2
129395962
n×3
194093943
n×4
258791924
n×5
323489905
n÷2
32348990.5
n÷3
21565993.666667
n÷3
16174495.25
n÷5
12939596.2
n2
4185828745476361
n3
2.7081466864408E+23
n4
1.7521162286456E+31
n5
1.1335838247071E+39
2 √n
8043.5055168751
3 √n
401.44887266682
4 √n
89.685592582505
5 √n
36.490359801773
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
64697982
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
32348991
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
8043.505579037
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999690871
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 64697981 can be divided by 2 positive divisors.
The sum of these divisors (counting 64697981) is 64697982, the average is 32348991.
Base
System
Value
2
Binary
11110110110011011001111101
3
Ternary
11111201222221112
4
Quaternary
3312303121331
5
Quinary
113030313411
6
Senary
10230411405
8
Octal
366633175
10
Decimal
64697981
12
Duodecimal
19800b65
16
Hexadecimal
3db367d
20
Vigesimal
10474j1
36
Base36
12ipa5
md5
0c03dfa065090a1cec1eedcc18c7f873
sha1
f11420d46f3cea022536ed8286e112713d625185
sha256
df6dc5efc7bef7948bc282a447b72ad93900d480e578526a5ed8cfbe34018b0e
sha512
6929293bbe9bce0c99173482f5560804e639318f1f1879d1a92c6b78d42b58a4421de0e06f1f53801fe7f306ba9df0341c060ec715d56114479f19f6d3573a80
ripemd-160
8901445add23e4f3479d8467ca6d8b2fd2cc44ae
Diameter
129395962
Circumference
406509403.62338
Area
1.3150168835974E+16
Volume
1.1343858313288E+24
Surface area
5.2600675343894E+16
Circumference
406509403.62338
Perimeter
258791924
Area
4185828745476361
Diagonal
91496762.188357
Surface area
25114972472858166
Volume
2.7081466864408E+23
Space diagonal
112060190.23913
Perimeter
194093943
Area
1.8125170147368E+15
Altitude
56030095.119563
Surface area
1.8125170147368E+15
Volume
3.1915814773837E+22
Height
30498920.729452