68658864 has 40 divisors (see below), whose sum is σ = 185083392. Its totient is φ = 21890880.

The previous prime is 68658839. The next prime is 68658881. The reversal of 68658864 is 46885686.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29992 + ... + 32199.

Almost surely, 2^68658864 is an apocalyptic number.

It is an amenable number.

68658864 is an abundant number, since it is smaller than the sum of its proper divisors (116424528).

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

68658864 is a wasteful number, since it uses less digits than its factorization.

68658864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62225 (or 62219 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 51.

The square root of 68658864 is about 8286.0644458030. The cubic root of 68658864 is about 409.4795378893.

The spelling of 68658864 in words is "sixty-eight million, six hundred fifty-eight thousand, eight hundred sixty-four".