12664044 has 18 divisors (see below), whose sum is σ = 32011980. Its totient is φ = 4221336.

The previous prime is 12664037. The next prime is 12664049. The reversal of 12664044 is 44046621.

12664044 is a `hidden beast` number, since 12 + 6 + 640 + 4 + 4 = 666.

12664044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 12663999 and 12664017.

It is not an unprimeable number, because it can be changed into a prime (12664049) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 175854 + ... + 175925.

Almost surely, 2^12664044 is an apocalyptic number.

It is an amenable number.

12664044 is an abundant number, since it is smaller than the sum of its proper divisors (19347936).

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

12664044 is a wasteful number, since it uses less digits than its factorization.

12664044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351789 (or 351784 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 12664044 is about 3558.6576120779. The cubic root of 12664044 is about 233.0902657008.

The spelling of 12664044 in words is "twelve million, six hundred sixty-four thousand, forty-four".