12686685 has 32 divisors (see below), whose sum is σ = 23113728. Its totient is φ = 5881920.

The previous prime is 12686647. The next prime is 12686747. The reversal of 12686685 is 58668621.

12686685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12686685 - 2⁹ = 12686173 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2124 + ... + 5466.

It is an arithmetic number, because the mean of its divisors is an integer number (722304).

Almost surely, 2^12686685 is an apocalyptic number.

12686685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12686685 is a deficient number, since it is larger than the sum of its proper divisors (10427043).

12686685 is a wasteful number, since it uses less digits than its factorization.

12686685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3385.

The product of its digits is 138240, while the sum is 42.

The square root of 12686685 is about 3561.8373067842. The cubic root of 12686685 is about 233.2290906242.

The spelling of 12686685 in words is "twelve million, six hundred eighty-six thousand, six hundred eighty-five".