12688626 has 8 divisors (see below), whose sum is σ = 25377264. Its totient is φ = 4229540.

The previous prime is 12688609. The next prime is 12688649. The reversal of 12688626 is 62688621.

12688626 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

12688626 is an admirable number.

It is a super-2 number, since 2×12688626² = 322002459535752, which contains 22 as substring.

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, 1057380 + ... + 1057391.

It is an arithmetic number, because the mean of its divisors is an integer number (3172158).

Almost surely, 2^12688626 is an apocalyptic number.

12688626 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12688626 is a wasteful number, since it uses less digits than its factorization.

12688626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2114776.

The product of its digits is 55296, while the sum is 39.

The square root of 12688626 is about 3562.1097681009. The cubic root of 12688626 is about 233.2409843165.

The spelling of 12688626 in words is "twelve million, six hundred eighty-eight thousand, six hundred twenty-six".