668757802 has 16 divisors (see below), whose sum is σ = 1021078080. Its totient is φ = 328408992.

The previous prime is 668757779. The next prime is 668757827. The reversal of 668757802 is 208757866.

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, 180238 + ... + 183910.

It is an arithmetic number, because the mean of its divisors is an integer number (63817380).

Almost surely, 2^668757802 is an apocalyptic number.

668757802 is a deficient number, since it is larger than the sum of its proper divisors (352320278).

668757802 is a wasteful number, since it uses less digits than its factorization.

668757802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5277.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The square root of 668757802 is about 25860.3519310933. The cubic root of 668757802 is about 874.4928988768.

The spelling of 668757802 in words is "six hundred sixty-eight million, seven hundred fifty-seven thousand, eight hundred two".