12644676 has 72 divisors (see below), whose sum is σ = 35852544. Its totient is φ = 3723840.

The previous prime is 12644669. The next prime is 12644701. The reversal of 12644676 is 67644621.

12644676 is a `hidden beast` number, since 1 + 2 + 644 + 6 + 7 + 6 = 666.

It is a super-2 number, since 2×12644676² = 319775662289952, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12644676.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14221 + ... + 15083.

It is an arithmetic number, because the mean of its divisors is an integer number (497952).

Almost surely, 2^12644676 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12644676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17926272).

12644676 is an abundant number, since it is smaller than the sum of its proper divisors (23207868).

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

12644676 is a wasteful number, since it uses less digits than its factorization.

12644676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921 (or 916 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 12644676 is about 3555.9353199967. The cubic root of 12644676 is about 232.9713780409.

Subtracting 12644676 from its reverse (67644621), we obtain a palindrome (54999945).

The spelling of 12644676 in words is "twelve million, six hundred forty-four thousand, six hundred seventy-six".