12644886 has 16 divisors (see below), whose sum is σ = 25325568. Its totient is φ = 4209000.

The previous prime is 12644867. The next prime is 12644893. The reversal of 12644886 is 68844621.

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, 5991 + ... + 7821.

It is an arithmetic number, because the mean of its divisors is an integer number (1582848).

Almost surely, 2^12644886 is an apocalyptic number.

12644886 is an abundant number, since it is smaller than the sum of its proper divisors (12680682).

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

12644886 is a wasteful number, since it uses less digits than its factorization.

12644886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2987.

The product of its digits is 73728, while the sum is 39.

The square root of 12644886 is about 3555.9648479702. The cubic root of 12644886 is about 232.9726677463.

It can be divided in two parts, 12644 and 886, that added together give a triangular number (13530 = T₁₆₄).

The spelling of 12644886 in words is "twelve million, six hundred forty-four thousand, eight hundred eighty-six".