12664936 has 8 divisors (see below), whose sum is σ = 23746770. Its totient is φ = 6332464.

The previous prime is 12664931. The next prime is 12664961. The reversal of 12664936 is 63946621.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10432900 + 2232036 = 3230^2 + 1494^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 12664895 and 12664904.

It is not an unprimeable number, because it can be changed into a prime (12664931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 791551 + ... + 791566.

Almost surely, 2^12664936 is an apocalyptic number.

It is an amenable number.

12664936 is a deficient number, since it is larger than the sum of its proper divisors (11081834).

12664936 is a wasteful number, since it uses less digits than its factorization.

12664936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583123 (or 1583119 counting only the distinct ones).

The product of its digits is 46656, while the sum is 37.

The square root of 12664936 is about 3558.7829380281. The cubic root of 12664936 is about 233.0957381927.

The spelling of 12664936 in words is "twelve million, six hundred sixty-four thousand, nine hundred thirty-six".