660704404 has 24 divisors (see below), whose sum is σ = 1217916000. Its totient is φ = 312752160.

The previous prime is 660704399. The next prime is 660704411. The reversal of 660704404 is 404407066.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203514 + ... + 206734.

It is an arithmetic number, because the mean of its divisors is an integer number (50746500).

Almost surely, 2^660704404 is an apocalyptic number.

It is an amenable number.

660704404 is a deficient number, since it is larger than the sum of its proper divisors (557211596).

660704404 is a wasteful number, since it uses less digits than its factorization.

660704404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5943 (or 5941 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 660704404 is about 25704.1709455878. The cubic root of 660704404 is about 870.9684041997.

The spelling of 660704404 in words is "six hundred sixty million, seven hundred four thousand, four hundred four".