12697864 has 16 divisors (see below), whose sum is σ = 24389820. Its totient is φ = 6193920.

The previous prime is 12697859. The next prime is 12697901. The reversal of 12697864 is 46879621.

It can be written as a sum of positive squares in 2 ways, for example, as 12545764 + 152100 = 3542^2 + 390^2 .

It is a super-2 number, since 2×12697864² = 322471500324992, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12697864.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19029 + ... + 19684.

Almost surely, 2^12697864 is an apocalyptic number.

It is an amenable number.

12697864 is a deficient number, since it is larger than the sum of its proper divisors (11691956).

12697864 is a wasteful number, since it uses less digits than its factorization.

12697864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38760 (or 38756 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 12697864 is about 3563.4062356122. The cubic root of 12697864 is about 233.2975745655.

The spelling of 12697864 in words is "twelve million, six hundred ninety-seven thousand, eight hundred sixty-four".