57656216 has 64 divisors (see below), whose sum is σ = 118195200. Its totient is φ = 26295808.

The previous prime is 57656213. The next prime is 57656219. The reversal of 57656216 is 61265675.

It is an interprime number because it is at equal distance from previous prime (57656213) and next prime (57656219).

It is a self number, because there is not a number n which added to its sum of digits gives 57656216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57656213) 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, 510176 + ... + 510288.

It is an arithmetic number, because the mean of its divisors is an integer number (1846800).

Almost surely, 2^57656216 is an apocalyptic number.

It is an amenable number.

57656216 is an abundant number, since it is smaller than the sum of its proper divisors (60538984).

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

57656216 is a wasteful number, since it uses less digits than its factorization.

57656216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 244 counting only the distinct ones).

The product of its digits is 75600, while the sum is 38.

The square root of 57656216 is about 7593.1690353896. The cubic root of 57656216 is about 386.3213517671.

The spelling of 57656216 in words is "fifty-seven million, six hundred fifty-six thousand, two hundred sixteen".