12664444 has 24 divisors (see below), whose sum is σ = 24907680. Its totient is φ = 5590464.

The previous prime is 12664423. The next prime is 12664447. The reversal of 12664444 is 44446621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12664447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4099 + ... + 6490.

It is an arithmetic number, because the mean of its divisors is an integer number (1037820).

Almost surely, 2^12664444 is an apocalyptic number.

It is an amenable number.

12664444 is a deficient number, since it is larger than the sum of its proper divisors (12243236).

12664444 is a wasteful number, since it uses less digits than its factorization.

12664444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10629 (or 10627 counting only the distinct ones).

The product of its digits is 18432, while the sum is 31.

The square root of 12664444 is about 3558.7138126014. The cubic root of 12664444 is about 233.0927197648.

The spelling of 12664444 in words is "twelve million, six hundred sixty-four thousand, four hundred forty-four".