13686756 has 12 divisors (see below), whose sum is σ = 31935792. Its totient is φ = 4562248.

The previous prime is 13686727. The next prime is 13686763. The reversal of 13686756 is 65768631.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 570270 + ... + 570293.

It is an arithmetic number, because the mean of its divisors is an integer number (2661316).

Almost surely, 2^13686756 is an apocalyptic number.

It is an amenable number.

13686756 is an abundant number, since it is smaller than the sum of its proper divisors (18249036).

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

13686756 is a wasteful number, since it uses less digits than its factorization.

13686756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140570 (or 1140568 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 13686756 is about 3699.5615956489. The cubic root of 13686756 is about 239.2031209162.

The spelling of 13686756 in words is "thirteen million, six hundred eighty-six thousand, seven hundred fifty-six".