13685816 has 32 divisors (see below), whose sum is σ = 27462240. Its totient is φ = 6371328.

The previous prime is 13685809. The next prime is 13685869. The reversal of 13685816 is 61858631.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 13685816.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13520 + ... + 14496.

It is an arithmetic number, because the mean of its divisors is an integer number (858195).

Almost surely, 2^13685816 is an apocalyptic number.

It is an amenable number.

13685816 is an abundant number, since it is smaller than the sum of its proper divisors (13776424).

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

13685816 is a wasteful number, since it uses less digits than its factorization.

13685816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103 (or 1099 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 13685816 is about 3699.4345513875. The cubic root of 13685816 is about 239.1976446713.

The spelling of 13685816 in words is "thirteen million, six hundred eighty-five thousand, eight hundred sixteen".