12669685 has 12 divisors (see below), whose sum is σ = 17686188. Its totient is φ = 8687616.

The previous prime is 12669677. The next prime is 12669689. The reversal of 12669685 is 58696621.

12669685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6563844 + 6105841 = 2562^2 + 2471^2 .

It is not a de Polignac number, because 12669685 - 2³ = 12669677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12669689) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25612 + ... + 26101.

It is an arithmetic number, because the mean of its divisors is an integer number (1473849).

Almost surely, 2^12669685 is an apocalyptic number.

It is an amenable number.

12669685 is a deficient number, since it is larger than the sum of its proper divisors (5016503).

12669685 is an equidigital number, since it uses as much as digits as its factorization.

12669685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51732 (or 51725 counting only the distinct ones).

The product of its digits is 155520, while the sum is 43.

The square root of 12669685 is about 3559.4500979786. The cubic root of 12669685 is about 233.1248693658.

The spelling of 12669685 in words is "twelve million, six hundred sixty-nine thousand, six hundred eighty-five".