12639604 has 12 divisors (see below), whose sum is σ = 23081184. Its totient is φ = 6044984.

The previous prime is 12639577. The next prime is 12639637. The reversal of 12639604 is 40693621.

12639604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68602 + ... + 68785.

It is an arithmetic number, because the mean of its divisors is an integer number (1923432).

Almost surely, 2^12639604 is an apocalyptic number.

It is an amenable number.

12639604 is a deficient number, since it is larger than the sum of its proper divisors (10441580).

12639604 is a wasteful number, since it uses less digits than its factorization.

12639604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137414 (or 137412 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 12639604 is about 3555.2220746389. Note that the first 3 decimals coincide. The cubic root of 12639604 is about 232.9402242479.

The spelling of 12639604 in words is "twelve million, six hundred thirty-nine thousand, six hundred four".