12646644 has 24 divisors (see below), whose sum is σ = 30196320. Its totient is φ = 4117344.

The previous prime is 12646597. The next prime is 12646661. The reversal of 12646644 is 44664621.

12646644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11739 + ... + 12770.

It is an arithmetic number, because the mean of its divisors is an integer number (1258180).

Almost surely, 2^12646644 is an apocalyptic number.

It is an amenable number.

12646644 is an abundant number, since it is smaller than the sum of its proper divisors (17549676).

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

12646644 is a wasteful number, since it uses less digits than its factorization.

12646644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24559 (or 24557 counting only the distinct ones).

The product of its digits is 27648, while the sum is 33.

The square root of 12646644 is about 3556.2120296743. The cubic root of 12646644 is about 232.9834638623.

The spelling of 12646644 in words is "twelve million, six hundred forty-six thousand, six hundred forty-four".