668793790 has 16 divisors (see below), whose sum is σ = 1375804512. Its totient is φ = 229300704.

The previous prime is 668793773. The next prime is 668793817. The reversal of 668793790 is 97397866.

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, 4777029 + ... + 4777168.

It is an arithmetic number, because the mean of its divisors is an integer number (85987782).

Almost surely, 2^668793790 is an apocalyptic number.

668793790 is an abundant number, since it is smaller than the sum of its proper divisors (707010722).

668793790 is a wasteful number, since it uses less digits than its factorization.

668793790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9554211.

The product of its (nonzero) digits is 3429216, while the sum is 55.

The square root of 668793790 is about 25861.0477359290. The cubic root of 668793790 is about 874.5085850170.

The spelling of 668793790 in words is "six hundred sixty-eight million, seven hundred ninety-three thousand, seven hundred ninety".