666576790 has 16 divisors (see below), whose sum is σ = 1308914640. Its totient is φ = 242391520.

The previous prime is 666576773. The next prime is 666576809. The reversal of 666576790 is 97675666.

It is a congruent number.

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, 3029785 + ... + 3030004.

It is an arithmetic number, because the mean of its divisors is an integer number (81807165).

Almost surely, 2^666576790 is an apocalyptic number.

666576790 is a deficient number, since it is larger than the sum of its proper divisors (642337850).

666576790 is a wasteful number, since it uses less digits than its factorization.

666576790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6059807.

The product of its (nonzero) digits is 2857680, while the sum is 52.

The square root of 666576790 is about 25818.1484618863. The cubic root of 666576790 is about 873.5412057219.

The spelling of 666576790 in words is "six hundred sixty-six million, five hundred seventy-six thousand, seven hundred ninety".