57217668 has 12 divisors (see below), whose sum is σ = 133507920. Its totient is φ = 19072552.

The previous prime is 57217637. The next prime is 57217717. The reversal of 57217668 is 86671275.

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, 2384058 + ... + 2384081.

It is an arithmetic number, because the mean of its divisors is an integer number (11125660).

Almost surely, 2^57217668 is an apocalyptic number.

It is an amenable number.

57217668 is an abundant number, since it is smaller than the sum of its proper divisors (76290252).

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

57217668 is a wasteful number, since it uses less digits than its factorization.

57217668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4768146 (or 4768144 counting only the distinct ones).

The product of its digits is 141120, while the sum is 42.

The square root of 57217668 is about 7564.2361147706. The cubic root of 57217668 is about 385.3393713077.

The spelling of 57217668 in words is "fifty-seven million, two hundred seventeen thousand, six hundred sixty-eight".