3686544 has 30 divisors (see below), whose sum is σ = 10317606. Its totient is φ = 1228800.

The previous prime is 3686537. The next prime is 3686549. The reversal of 3686544 is 4456863.

3686544 is a `hidden beast` number, since 36 + 86 + 544 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3686400 + 144 = 1920^2 + 12^2 .

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 = 3686499 and 3686508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3686549) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12657 + ... + 12944.

Almost surely, 2^3686544 is an apocalyptic number.

It is an amenable number.

3686544 is an abundant number, since it is smaller than the sum of its proper divisors (6631062).

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

3686544 is a wasteful number, since it uses less digits than its factorization.

3686544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25615 (or 25606 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 3686544 is about 1920.0374996338. The cubic root of 3686544 is about 154.4803129469.

The spelling of 3686544 in words is "three million, six hundred eighty-six thousand, five hundred forty-four".