12644366 has 16 divisors (see below), whose sum is σ = 21725280. Its totient is φ = 5406720.

The previous prime is 12644353. The next prime is 12644371. The reversal of 12644366 is 66344621.

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, 8270 + ... + 9678.

It is an arithmetic number, because the mean of its divisors is an integer number (1357830).

Almost surely, 2^12644366 is an apocalyptic number.

12644366 is a deficient number, since it is larger than the sum of its proper divisors (9080914).

12644366 is a wasteful number, since it uses less digits than its factorization.

12644366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059.

The product of its digits is 20736, while the sum is 32.

The square root of 12644366 is about 3555.8917306352. The cubic root of 12644366 is about 232.9694741641.

Adding to 12644366 its reverse (66344621), we get a palindrome (78988987).

The spelling of 12644366 in words is "twelve million, six hundred forty-four thousand, three hundred sixty-six".