666877160 has 32 divisors (see below), whose sum is σ = 1501251840. Its totient is φ = 266612544.

The previous prime is 666877117. The next prime is 666877171. The reversal of 666877160 is 61778666.

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, 113249 + ... + 118991.

It is an arithmetic number, because the mean of its divisors is an integer number (46914120).

Almost surely, 2^666877160 is an apocalyptic number.

It is an amenable number.

666877160 is an abundant number, since it is smaller than the sum of its proper divisors (834374680).

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

666877160 is a wasteful number, since it uses less digits than its factorization.

666877160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8657 (or 8653 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 666877160 is about 25823.9648388856. The cubic root of 666877160 is about 873.6723964934.

The spelling of 666877160 in words is "six hundred sixty-six million, eight hundred seventy-seven thousand, one hundred sixty".