12868685 has 4 divisors (see below), whose sum is σ = 15442428. Its totient is φ = 10294944.

The previous prime is 12868657. The next prime is 12868697. The reversal of 12868685 is 58686821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58686821 = 131 ⋅447991.

It can be written as a sum of positive squares in 2 ways, for example, as 4791721 + 8076964 = 2189^2 + 2842^2 .

It is a cyclic number.

It is not a de Polignac number, because 12868685 - 2¹⁰ = 12867661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1286864 + ... + 1286873.

It is an arithmetic number, because the mean of its divisors is an integer number (3860607).

Almost surely, 2^12868685 is an apocalyptic number.

It is an amenable number.

12868685 is a deficient number, since it is larger than the sum of its proper divisors (2573743).

12868685 is an equidigital number, since it uses as much as digits as its factorization.

12868685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573742.

The product of its digits is 184320, while the sum is 44.

The square root of 12868685 is about 3587.2949418747. The cubic root of 12868685 is about 234.3390815476.

The spelling of 12868685 in words is "twelve million, eight hundred sixty-eight thousand, six hundred eighty-five".