12913604 has 18 divisors (see below), whose sum is σ = 24840942. Its totient is φ = 5869600.

The previous prime is 12913601. The next prime is 12913643. The reversal of 12913604 is 40631921.

It can be written as a sum of positive squares in only one way, i.e., 6512704 + 6400900 = 2552^2 + 2530^2 .

It is a super-2 number, since 2×12913604² = 333522336537632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12913601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12857 + ... + 13824.

Almost surely, 2^12913604 is an apocalyptic number.

It is an amenable number.

12913604 is a deficient number, since it is larger than the sum of its proper divisors (11927338).

12913604 is a wasteful number, since it uses less digits than its factorization.

12913604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26707 (or 26694 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 12913604 is about 3593.5503335838. The cubic root of 12913604 is about 234.6114236282.

The spelling of 12913604 in words is "twelve million, nine hundred thirteen thousand, six hundred four".