12665056 has 24 divisors (see below), whose sum is σ = 25220160. Its totient is φ = 6259968.

The previous prime is 12665041. The next prime is 12665069. The reversal of 12665056 is 65056621.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 625 + ... + 5071.

It is an arithmetic number, because the mean of its divisors is an integer number (1050840).

Almost surely, 2^12665056 is an apocalyptic number.

12665056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12665056 is a deficient number, since it is larger than the sum of its proper divisors (12555104).

12665056 is an equidigital number, since it uses as much as digits as its factorization.

12665056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4546 (or 4538 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 12665056 is about 3558.7997976846. The cubic root of 12665056 is about 233.0964743827.

The spelling of 12665056 in words is "twelve million, six hundred sixty-five thousand, fifty-six".