80668864 has 28 divisors (see below), whose sum is σ = 160628584. Its totient is φ = 40195584.

The previous prime is 80668831. The next prime is 80668877. The reversal of 80668864 is 46886608.

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, 18019 + ... + 22045.

Almost surely, 2^80668864 is an apocalyptic number.

It is an amenable number.

80668864 is a deficient number, since it is larger than the sum of its proper divisors (79959720).

80668864 is a wasteful number, since it uses less digits than its factorization.

80668864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4352 (or 4342 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The square root of 80668864 is about 8981.5847154052. The cubic root of 80668864 is about 432.0844599380.

The spelling of 80668864 in words is "eighty million, six hundred sixty-eight thousand, eight hundred sixty-four".