13086985 has 4 divisors (see below), whose sum is σ = 15704388. Its totient is φ = 10469584.

The previous prime is 13086973. The next prime is 13087021. The reversal of 13086985 is 58968031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58968031 = 3041 ⋅19391.

It can be written as a sum of positive squares in 2 ways, for example, as 2917264 + 10169721 = 1708^2 + 3189^2 .

It is a cyclic number.

It is not a de Polignac number, because 13086985 - 2⁹ = 13086473 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian 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, 1308694 + ... + 1308703.

It is an arithmetic number, because the mean of its divisors is an integer number (3926097).

Almost surely, 2^13086985 is an apocalyptic number.

It is an amenable number.

13086985 is a deficient number, since it is larger than the sum of its proper divisors (2617403).

13086985 is an equidigital number, since it uses as much as digits as its factorization.

13086985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2617402.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 13086985 is about 3617.5938135728. The cubic root of 13086985 is about 235.6567414736.

The spelling of 13086985 in words is "thirteen million, eighty-six thousand, nine hundred eighty-five".