12604656 has 20 divisors (see below), whose sum is σ = 32562152. Its totient is φ = 4201536.

The previous prime is 12604649. The next prime is 12604661. The reversal of 12604656 is 65640621.

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, 131251 + ... + 131346.

Almost surely, 2^12604656 is an apocalyptic number.

12604656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12604656 is an abundant number, since it is smaller than the sum of its proper divisors (19957496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12604656 is a wasteful number, since it uses less digits than its factorization.

12604656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262608 (or 262602 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 12604656 is about 3550.3036489855. The cubic root of 12604656 is about 232.7253359362.

The spelling of 12604656 in words is "twelve million, six hundred four thousand, six hundred fifty-six".