57656 has 8 divisors (see below), whose sum is σ = 108120. Its totient is φ = 28824.

The previous prime is 57653. The next prime is 57667. The reversal of 57656 is 65675.

It is a tau number, because it is divible by the number of its divisors (8).

It is a nialpdrome in base 5.

It is a zygodrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3596 + ... + 3611.

It is an arithmetic number, because the mean of its divisors is an integer number (13515).

2⁵⁷⁶⁵⁶ is an apocalyptic number.

It is an amenable number.

57656 is a deficient number, since it is larger than the sum of its proper divisors (50464).

57656 is a wasteful number, since it uses less digits than its factorization.

57656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7213 (or 7209 counting only the distinct ones).

The product of its digits is 6300, while the sum is 29.

The square root of 57656 is about 240.1166383240. The cubic root of 57656 is about 38.6320869336.

The spelling of 57656 in words is "fifty-seven thousand, six hundred fifty-six".