13249686 has 8 divisors (see below), whose sum is σ = 26499384. Its totient is φ = 4416560.

The previous prime is 13249667. The next prime is 13249693. The reversal of 13249686 is 68694231.

It is a sphenic number, since it is the product of 3 distinct primes.

13249686 is an admirable number.

It is a Curzon number.

It is a congruent 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, 1104135 + ... + 1104146.

It is an arithmetic number, because the mean of its divisors is an integer number (3312423).

Almost surely, 2^13249686 is an apocalyptic number.

13249686 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13249686 is a wasteful number, since it uses less digits than its factorization.

13249686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208286.

The product of its digits is 62208, while the sum is 39.

The square root of 13249686 is about 3640.0118131676. The cubic root of 13249686 is about 236.6293053059.

The spelling of 13249686 in words is "thirteen million, two hundred forty-nine thousand, six hundred eighty-six".