12645944 has 32 divisors (see below), whose sum is σ = 25132800. Its totient is φ = 5948640.

The previous prime is 12645931. The next prime is 12645947. The reversal of 12645944 is 44954621.

It is a super-2 number, since 2×12645944² = 319839799302272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12645947) 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 7 ways as a sum of consecutive naturals, for example, 41039 + ... + 41345.

It is an arithmetic number, because the mean of its divisors is an integer number (785400).

Almost surely, 2^12645944 is an apocalyptic number.

It is an amenable number.

12645944 is a deficient number, since it is larger than the sum of its proper divisors (12486856).

12645944 is a wasteful number, since it uses less digits than its factorization.

12645944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603 (or 599 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 12645944 is about 3556.1136089838. The cubic root of 12645944 is about 232.9791651874.

The spelling of 12645944 in words is "twelve million, six hundred forty-five thousand, nine hundred forty-four".