12688680 has 64 divisors (see below), whose sum is σ = 39009600. Its totient is φ = 3299840.

The previous prime is 12688679. The next prime is 12688693. The reversal of 12688680 is 8688621.

It is a super-2 number, since 2×12688680² = 322005200284800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3631 + ... + 6209.

It is an arithmetic number, because the mean of its divisors is an integer number (609525).

Almost surely, 2^12688680 is an apocalyptic number.

12688680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12688680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19504800).

12688680 is an abundant number, since it is smaller than the sum of its proper divisors (26320920).

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

12688680 is a wasteful number, since it uses less digits than its factorization.

12688680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2634 (or 2630 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 12688680 is about 3562.1173478705. The cubic root of 12688680 is about 233.2413151901.

The spelling of 12688680 in words is "twelve million, six hundred eighty-eight thousand, six hundred eighty".