12969664 has 28 divisors (see below), whose sum is σ = 25895808. Its totient is φ = 6444800.

The previous prime is 12969661. The next prime is 12969679. The reversal of 12969664 is 46696921.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12969664.

It is not an unprimeable number, because it can be changed into a prime (12969661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11694 + ... + 12754.

Almost surely, 2^12969664 is an apocalyptic number.

It is an amenable number.

12969664 is a deficient number, since it is larger than the sum of its proper divisors (12926144).

12969664 is a wasteful number, since it uses less digits than its factorization.

12969664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264 (or 1254 counting only the distinct ones).

The product of its digits is 139968, while the sum is 43.

The square root of 12969664 is about 3601.3419720987. The cubic root of 12969664 is about 234.9504286568.

The spelling of 12969664 in words is "twelve million, nine hundred sixty-nine thousand, six hundred sixty-four".