13161686 has 4 divisors (see below), whose sum is σ = 19742532. Its totient is φ = 6580842.

The previous prime is 13161601. The next prime is 13161703. The reversal of 13161686 is 68616131.

13161686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3290420 + ... + 3290423.

It is an arithmetic number, because the mean of its divisors is an integer number (4935633).

Almost surely, 2^13161686 is an apocalyptic number.

13161686 is a deficient number, since it is larger than the sum of its proper divisors (6580846).

13161686 is an equidigital number, since it uses as much as digits as its factorization.

13161686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6580845.

The product of its digits is 5184, while the sum is 32.

The square root of 13161686 is about 3627.9038024733. The cubic root of 13161686 is about 236.1042702127.

The spelling of 13161686 in words is "thirteen million, one hundred sixty-one thousand, six hundred eighty-six".