57668887 has 4 divisors (see below), whose sum is σ = 57685216. Its totient is φ = 57652560.

The previous prime is 57668873. The next prime is 57668899. The reversal of 57668887 is 78886675.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57668887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57668867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 414 + ... + 10747.

It is an arithmetic number, because the mean of its divisors is an integer number (14421304).

Almost surely, 2^57668887 is an apocalyptic number.

57668887 is a deficient number, since it is larger than the sum of its proper divisors (16329).

57668887 is a wasteful number, since it uses less digits than its factorization.

57668887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16328.

The product of its digits is 4515840, while the sum is 55.

The square root of 57668887 is about 7594.0033579134. The cubic root of 57668887 is about 386.3496500706.

The spelling of 57668887 in words is "fifty-seven million, six hundred sixty-eight thousand, eight hundred eighty-seven".