12805684 has 6 divisors (see below), whose sum is σ = 22409954. Its totient is φ = 6402840.

The previous prime is 12805679. The next prime is 12805691. The reversal of 12805684 is 48650821.

It can be written as a sum of positive squares in only one way, i.e., 12802084 + 3600 = 3578^2 + 60^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1600707 + ... + 1600714.

Almost surely, 2^12805684 is an apocalyptic number.

It is an amenable number.

12805684 is a deficient number, since it is larger than the sum of its proper divisors (9604270).

12805684 is a wasteful number, since it uses less digits than its factorization.

12805684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3201425 (or 3201423 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 12805684 is about 3578.5030389815. The cubic root of 12805684 is about 233.9560391764.

The spelling of 12805684 in words is "twelve million, eight hundred five thousand, six hundred eighty-four".