12685699 has 4 divisors (see below), whose sum is σ = 13661536. Its totient is φ = 11709864.

The previous prime is 12685681. The next prime is 12685733. The reversal of 12685699 is 99658621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12685699 - 2⁵ = 12685667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12685609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487899 + ... + 487924.

It is an arithmetic number, because the mean of its divisors is an integer number (3415384).

Almost surely, 2^12685699 is an apocalyptic number.

12685699 is a deficient number, since it is larger than the sum of its proper divisors (975837).

12685699 is an equidigital number, since it uses as much as digits as its factorization.

12685699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975836.

The product of its digits is 233280, while the sum is 46.

The square root of 12685699 is about 3561.6988923827. The cubic root of 12685699 is about 233.2230483355.

The spelling of 12685699 in words is "twelve million, six hundred eighty-five thousand, six hundred ninety-nine".