57868857 has 16 divisors (see below), whose sum is σ = 86391360. Its totient is φ = 38282400.

The previous prime is 57868829. The next prime is 57868861. The reversal of 57868857 is 75886875.

It is a happy number.

57868857 is a `hidden beast` number, since 578 + 68 + 8 + 5 + 7 = 666.

It is not a de Polignac number, because 57868857 - 2¹² = 57864761 is a prime.

It is a super-2 number, since 2×57868857² = 6697609220972898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57868817) 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, 4644 + ... + 11717.

It is an arithmetic number, because the mean of its divisors is an integer number (5399460).

Almost surely, 2^57868857 is an apocalyptic number.

It is an amenable number.

57868857 is a deficient number, since it is larger than the sum of its proper divisors (28522503).

57868857 is a wasteful number, since it uses less digits than its factorization.

57868857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16501 (or 16495 counting only the distinct ones).

The product of its digits is 3763200, while the sum is 54.

The square root of 57868857 is about 7607.1582736262. The cubic root of 57868857 is about 386.7956977057.

The spelling of 57868857 in words is "fifty-seven million, eight hundred sixty-eight thousand, eight hundred fifty-seven".