13685544 has 64 divisors (see below), whose sum is σ = 40262400. Its totient is φ = 4292352.

The previous prime is 13685537. The next prime is 13685557. The reversal of 13685544 is 44558631.

It is a happy number.

13685544 is a `hidden beast` number, since 1 + 36 + 85 + 544 = 666.

It is a super-2 number, since 2×13685544² = 374588229151872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 13685499 and 13685508.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1809 + ... + 5535.

It is an arithmetic number, because the mean of its divisors is an integer number (629100).

Almost surely, 2^13685544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13685544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20131200).

13685544 is an abundant number, since it is smaller than the sum of its proper divisors (26576856).

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

13685544 is a wasteful number, since it uses less digits than its factorization.

13685544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3759 (or 3749 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 13685544 is about 3699.3977888300. The cubic root of 13685544 is about 239.1960600090.

The spelling of 13685544 in words is "thirteen million, six hundred eighty-five thousand, five hundred forty-four".