57664716 has 12 divisors (see below), whose sum is σ = 134551032. Its totient is φ = 19221568.

The previous prime is 57664699. The next prime is 57664721. The reversal of 57664716 is 61746675.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2402685 + ... + 2402708.

It is an arithmetic number, because the mean of its divisors is an integer number (11212586).

Almost surely, 2^57664716 is an apocalyptic number.

It is an amenable number.

57664716 is an abundant number, since it is smaller than the sum of its proper divisors (76886316).

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

57664716 is a wasteful number, since it uses less digits than its factorization.

57664716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4805400 (or 4805398 counting only the distinct ones).

The product of its digits is 211680, while the sum is 42.

The square root of 57664716 is about 7593.7287283653. The cubic root of 57664716 is about 386.3403353816.

The spelling of 57664716 in words is "fifty-seven million, six hundred sixty-four thousand, seven hundred sixteen".