12864717 has 32 divisors (see below), whose sum is σ = 19820160. Its totient is φ = 8242560.

The previous prime is 12864707. The next prime is 12864739. The reversal of 12864717 is 71746821.

12864717 is a `hidden beast` number, since 1 + 2 + 8 + 647 + 1 + 7 = 666.

It is not a de Polignac number, because 12864717 - 2⁴ = 12864701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12864707) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 120178 + ... + 120284.

It is an arithmetic number, because the mean of its divisors is an integer number (619380).

Almost surely, 2^12864717 is an apocalyptic number.

It is an amenable number.

12864717 is a deficient number, since it is larger than the sum of its proper divisors (6955443).

12864717 is a wasteful number, since it uses less digits than its factorization.

12864717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 244 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 12864717 is about 3586.7418362631. The cubic root of 12864717 is about 234.3149932779.

The spelling of 12864717 in words is "twelve million, eight hundred sixty-four thousand, seven hundred seventeen".