12664136 has 16 divisors (see below), whose sum is σ = 23957100. Its totient is φ = 6275584.

The previous prime is 12664129. The next prime is 12664147. The reversal of 12664136 is 63146621.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12292036 + 372100 = 3506^2 + 610^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12664099 and 12664108.

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, 6101 + ... + 7908.

Almost surely, 2^12664136 is an apocalyptic number.

It is an amenable number.

12664136 is a deficient number, since it is larger than the sum of its proper divisors (11292964).

12664136 is a wasteful number, since it uses less digits than its factorization.

12664136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14128 (or 14124 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 12664136 is about 3558.6705382769. The cubic root of 12664136 is about 233.0908301401.

The spelling of 12664136 in words is "twelve million, six hundred sixty-four thousand, one hundred thirty-six".