| Base | Representation |
|---|---|
| bin | 1111010001111… |
| … | …1001000100000 |
| 3 | 11110121010212000 |
| 4 | 3310133020200 |
| 5 | 112401400111 |
| 6 | 10205404000 |
| 7 | 1405522140 |
| oct | 364371040 |
| 9 | 143533760 |
| 10 | 64090656 |
| 11 | 331a5293 |
| 12 | 19569600 |
| 13 | 1037cb86 |
| 14 | 8724920 |
| 15 | 595ec56 |
| hex | 3d1f220 |
64090656 has 96 divisors (see below), whose sum is σ = 213655680. Its totient is φ = 18309888.
The previous prime is 64090651. The next prime is 64090669. The reversal of 64090656 is 65609046.
It is a happy number.
64090656 is a `hidden beast` number, since 640 + 9 + 0 + 6 + 5 + 6 = 666.
It is a tau number, because it is divible by the number of its divisors (96).
It is a super-2 number, since 2×640906562 = 8215224373020672, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a self number, because there is not a number n which added to its sum of digits gives 64090656.
It is not an unprimeable number, because it can be changed into a prime (64090651) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 750 + ... + 11346.
It is an arithmetic number, because the mean of its divisors is an integer number (2225580).
Almost surely, 264090656 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 64090656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106827840).
64090656 is an abundant number, since it is smaller than the sum of its proper divisors (149565024).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
64090656 is a wasteful number, since it uses less digits than its factorization.
64090656 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 10623 (or 10609 counting only the distinct ones).
The product of its (nonzero) digits is 38880, while the sum is 36.
The square root of 64090656 is about 8005.6639949476. The cubic root of 64090656 is about 400.1887775602.
It can be divided in two parts, 64090 and 656, that added together give a palindrome (64746).
The spelling of 64090656 in words is "sixty-four million, ninety thousand, six hundred fifty-six".
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