13179985 has 32 divisors (see below), whose sum is σ = 19756800. Its totient is φ = 8218368.

The previous prime is 13179941. The next prime is 13179997. The reversal of 13179985 is 58997131.

It is a cyclic number.

It is not a de Polignac number, because 13179985 - 2⁷ = 13179857 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37591 + ... + 37939.

It is an arithmetic number, because the mean of its divisors is an integer number (617400).

Almost surely, 2^13179985 is an apocalyptic number.

It is an amenable number.

13179985 is a deficient number, since it is larger than the sum of its proper divisors (6576815).

13179985 is a wasteful number, since it uses less digits than its factorization.

13179985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457.

The product of its digits is 68040, while the sum is 43.

The square root of 13179985 is about 3630.4249062610. The cubic root of 13179985 is about 236.2136399723.

The spelling of 13179985 in words is "thirteen million, one hundred seventy-nine thousand, nine hundred eighty-five".