56165664 has 48 divisors (see below), whose sum is σ = 147903840. Its totient is φ = 18662400.

The previous prime is 56165657. The next prime is 56165677. The reversal of 56165664 is 46656165.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37767 + ... + 39225.

It is an arithmetic number, because the mean of its divisors is an integer number (3081330).

Almost surely, 2^56165664 is an apocalyptic number.

It is an amenable number.

56165664 is an abundant number, since it is smaller than the sum of its proper divisors (91738176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56165664 is a wasteful number, since it uses less digits than its factorization.

56165664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873 (or 1865 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 56165664 is about 7494.3754909932. The cubic root of 56165664 is about 382.9631316100.

The spelling of 56165664 in words is "fifty-six million, one hundred sixty-five thousand, six hundred sixty-four".