12697688 has 16 divisors (see below), whose sum is σ = 24055080. Its totient is φ = 6283008.

The previous prime is 12697673. The next prime is 12697703. The reversal of 12697688 is 88679621.

It is an interprime number because it is at equal distance from previous prime (12697673) and next prime (12697703).

It is a super-2 number, since 2×12697688² = 322462561090688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7406 + ... + 8957.

Almost surely, 2^12697688 is an apocalyptic number.

It is an amenable number.

12697688 is a deficient number, since it is larger than the sum of its proper divisors (11357392).

12697688 is a wasteful number, since it uses less digits than its factorization.

12697688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16466 (or 16462 counting only the distinct ones).

The product of its digits is 290304, while the sum is 47.

The square root of 12697688 is about 3563.3815400543. The cubic root of 12697688 is about 233.2964966792.

The spelling of 12697688 in words is "twelve million, six hundred ninety-seven thousand, six hundred eighty-eight".