66393721 is an odd 8-digits composite number following 66393720
and preceding 66393722 . In scientific notation, it is written as 6.6393721 × 10^7.
The sum of its digits is 37. It has a total of 2 prime factors and 4 positive divisors.
There are 62488192 positive integers (up to 66393721) that are relatively prime to 66393721.
66393721 has 4 divisors, whose sum is 70299252
The reverse of 66393721 is 12739366
Previous prime number is 17
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1
Name
sixty-six million three hundred ninety-three thousand seven hundred twenty-one
Scientific notation
6.6393721 × 10^7
Engineering notation
6.6393721 × 10^6
Prime Factorization
17 × 3905513
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
66393721
Product of the distinct prime numbers
The prime factorization of 66393721 is 17 × 3905513.
Since it has a total of 2 prime factors.
1 , 10 , 94 , 97 , 635 , 145 , 7810 , 408 , 72217 , 75577 , 686915 , 541889 , 9501691 , 9559295 , 43937881 , 23001790 , 294751095 , 693695806 , 117213620 , 5816438357
n×2
132787442
n×3
199181163
n×4
265574884
n×5
331968605
n÷2
33196860.5
n÷3
22131240.333333
n÷3
16598430.25
n÷5
13278744.2
n2
4408126188225841
n3
2.9267190027386E+23
n4
1.9431576491322E+31
n5
1.290134668155E+39
2 √n
8148.2342258921
3 √n
404.9260058896
4 √n
90.267570178288
5 √n
36.679668486051
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
-66393720
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 66393721 can be divided by 4 positive divisors.
The sum of these divisors (counting 66393721) is 1, the average is 0.25.
Base
System
Value
2
Binary
11111101010001011001111001
3
Ternary
11121221011001201
4
Quaternary
3331101121321
5
Quinary
113444044341
6
Senary
10331014201
8
Octal
375213171
10
Decimal
66393721
12
Duodecimal
1a29a361
16
Hexadecimal
3f51679
20
Vigesimal
10ej461
36
Base36
13j1q1
md5
61e1ffe7d1386299818fb7d37af5c530
sha1
ac3da10d7fab73cf7bf7c859e17b5eb998587734
sha256
e9e30c44b9cac8950c9e8e4d2a7a104c024d25418034480f9c37d620a2e0fe06
sha512
0b273482749bf223e70a7fc44d401651649354b4d84b78e2b854bc3c56c97bcdbbc50593f484a3ca84cdb506b6b62e1dd5ef2c60c0f40d8e3ba889df210b8686
ripemd-160
1f624bb4a5fc9986fa9dcff7b64f92f352d2283c
Diameter
132787442
Circumference
417164052.27618
Area
1.3848536849027E+16
Volume
1.2259411890834E+24
Surface area
5.5394147396108E+16
Circumference
417164052.27618
Perimeter
265574884
Area
4408126188225841
Diagonal
93894900.694615
Surface area
26448757129355046
Volume
2.9267190027386E+23
Space diagonal
114997298.07555
Perimeter
199181163
Area
1.9087746310455E+15
Altitude
57498649.037776
Surface area
1.9087746310455E+15
Volume
3.44917142244E+22
Height
31298300.231538