123666604 has 12 divisors (see below), whose sum is σ = 218402800. Its totient is φ = 61265808.

The previous prime is 123666589. The next prime is 123666637. The reversal of 123666604 is 406666321.

It is a self number, because there is not a number n which added to its sum of digits gives 123666604.

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 3 ways as a sum of consecutive naturals, for example, 141384 + ... + 142255.

Almost surely, 2^123666604 is an apocalyptic number.

It is an amenable number.

123666604 is a deficient number, since it is larger than the sum of its proper divisors (94736196).

123666604 is a wasteful number, since it uses less digits than its factorization.

123666604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283752 (or 283750 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 123666604 is about 11120.5487274684. The cubic root of 123666604 is about 498.2157793533.

The spelling of 123666604 in words is "one hundred twenty-three million, six hundred sixty-six thousand, six hundred four".