Base | Representation |
---|---|
bin | 1111011101111… |
… | …1101001000000 |
3 | 11112002012111011 |
4 | 3313133221000 |
5 | 113102113133 |
6 | 10234330304 |
7 | 1415315044 |
oct | 367375100 |
9 | 145065434 |
10 | 64879168 |
11 | 33693752 |
12 | 19889994 |
13 | 10597a53 |
14 | 888c024 |
15 | 5a686cd |
hex | 3ddfa40 |
64879168 has 28 divisors (see below), whose sum is σ = 130032252. Its totient is φ = 32115200.
The previous prime is 64879163. The next prime is 64879183. The reversal of 64879168 is 86197846.
It can be written as a sum of positive squares in 2 ways, for example, as 45589504 + 19289664 = 6752^2 + 4392^2 .
It is not an unprimeable number, because it can be changed into a prime (64879163) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1446 + ... + 11482.
It is an arithmetic number, because the mean of its divisors is an integer number (4644009).
Almost surely, 264879168 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 64879168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65016126).
64879168 is an abundant number, since it is smaller than the sum of its proper divisors (65153084).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
64879168 is a wasteful number, since it uses less digits than its factorization.
64879168 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 10150 (or 10140 counting only the distinct ones).
The product of its digits is 580608, while the sum is 49.
The square root of 64879168 is about 8054.7605799304. The cubic root of 64879168 is about 401.8232765293.
The spelling of 64879168 in words is "sixty-four million, eight hundred seventy-nine thousand, one hundred sixty-eight".
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