12664896 has 28 divisors (see below), whose sum is σ = 33509712. Its totient is φ = 4221568.

The previous prime is 12664889. The next prime is 12664903. The reversal of 12664896 is 69846621.

It is an interprime number because it is at equal distance from previous prime (12664889) and next prime (12664903).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32790 + ... + 33173.

Almost surely, 2^12664896 is an apocalyptic number.

12664896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12664896 is an abundant number, since it is smaller than the sum of its proper divisors (20844816).

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

12664896 is an equidigital number, since it uses as much as digits as its factorization.

12664896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65978 (or 65968 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 12664896 is about 3558.7773181249. Note that the first 3 decimals coincide. The cubic root of 12664896 is about 233.0954927950.

The spelling of 12664896 in words is "twelve million, six hundred sixty-four thousand, eight hundred ninety-six".