13685899 has 4 divisors (see below), whose sum is σ = 13910320. Its totient is φ = 13461480.

The previous prime is 13685887. The next prime is 13685927. The reversal of 13685899 is 99858631.

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

It is not a de Polignac number, because 13685899 - 2⁹ = 13685387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13685809) by changing a digit.

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, 112119 + ... + 112240.

It is an arithmetic number, because the mean of its divisors is an integer number (3477580).

Almost surely, 2^13685899 is an apocalyptic number.

13685899 is a deficient number, since it is larger than the sum of its proper divisors (224421).

13685899 is an equidigital number, since it uses as much as digits as its factorization.

13685899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224420.

The product of its digits is 466560, while the sum is 49.

The square root of 13685899 is about 3699.4457693011. The cubic root of 13685899 is about 239.1981282222.

The spelling of 13685899 in words is "thirteen million, six hundred eighty-five thousand, eight hundred ninety-nine".