13687636 has 12 divisors (see below), whose sum is σ = 24004512. Its totient is φ = 6829208.

The previous prime is 13687627. The next prime is 13687649. The reversal of 13687636 is 63678631.

13687636 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1390 + ... + 5413.

It is an arithmetic number, because the mean of its divisors is an integer number (2000376).

Almost surely, 2^13687636 is an apocalyptic number.

It is an amenable number.

13687636 is a deficient number, since it is larger than the sum of its proper divisors (10316876).

13687636 is a wasteful number, since it uses less digits than its factorization.

13687636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7310 (or 7308 counting only the distinct ones).

The product of its digits is 108864, while the sum is 40.

The square root of 13687636 is about 3699.6805267482. The cubic root of 13687636 is about 239.2082473862.

The spelling of 13687636 in words is "thirteen million, six hundred eighty-seven thousand, six hundred thirty-six".