13685044 has 12 divisors (see below), whose sum is σ = 23984100. Its totient is φ = 6832448.

The previous prime is 13685033. The next prime is 13685047. The reversal of 13685044 is 44058631.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13104400 + 580644 = 3620^2 + 762^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13684997 and 13685015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13685047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1122 + ... + 5350.

It is an arithmetic number, because the mean of its divisors is an integer number (1998675).

Almost surely, 2^13685044 is an apocalyptic number.

It is an amenable number.

13685044 is a deficient number, since it is larger than the sum of its proper divisors (10299056).

13685044 is a wasteful number, since it uses less digits than its factorization.

13685044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5042 (or 5040 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 13685044 is about 3699.3302096461. The cubic root of 13685044 is about 239.1931469720.

The spelling of 13685044 in words is "thirteen million, six hundred eighty-five thousand, forty-four".