12866685 has 16 divisors (see below), whose sum is σ = 22170624. Its totient is φ = 6334272.

The previous prime is 12866681. The next prime is 12866717. The reversal of 12866685 is 58666821.

12866685 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 12866685 - 2² = 12866681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12866681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32797 + ... + 33186.

It is an arithmetic number, because the mean of its divisors is an integer number (1385664).

Almost surely, 2^12866685 is an apocalyptic number.

12866685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12866685 is a deficient number, since it is larger than the sum of its proper divisors (9303939).

12866685 is a wasteful number, since it uses less digits than its factorization.

12866685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66004.

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

The square root of 12866685 is about 3587.0161694645. The cubic root of 12866685 is about 234.3269409016.

The spelling of 12866685 in words is "twelve million, eight hundred sixty-six thousand, six hundred eighty-five".