3686844 has 24 divisors (see below), whose sum is σ = 9831808. Its totient is φ = 1053360.

The previous prime is 3686833. The next prime is 3686849. The reversal of 3686844 is 4486863.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3686849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21862 + ... + 22029.

Almost surely, 2^3686844 is an apocalyptic number.

It is an amenable number.

3686844 is an abundant number, since it is smaller than the sum of its proper divisors (6144964).

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

3686844 is a wasteful number, since it uses less digits than its factorization.

3686844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43905 (or 43903 counting only the distinct ones).

The product of its digits is 110592, while the sum is 39.

The square root of 3686844 is about 1920.1156215187. The cubic root of 3686844 is about 154.4845032163.

The spelling of 3686844 in words is "three million, six hundred eighty-six thousand, eight hundred forty-four".