666702796 has 12 divisors (see below), whose sum is σ = 1184144248. Its totient is φ = 328375872.

The previous prime is 666702767. The next prime is 666702809. The reversal of 666702796 is 697207666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1243581 + ... + 1244116.

Almost surely, 2^666702796 is an apocalyptic number.

It is an amenable number.

666702796 is a deficient number, since it is larger than the sum of its proper divisors (517441452).

666702796 is a wasteful number, since it uses less digits than its factorization.

666702796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487768 (or 2487766 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 49.

The square root of 666702796 is about 25820.5886067688. The cubic root of 666702796 is about 873.5962453911.

The spelling of 666702796 in words is "six hundred sixty-six million, seven hundred two thousand, seven hundred ninety-six".