3686864 has 20 divisors (see below), whose sum is σ = 7201920. Its totient is φ = 1828320.

The previous prime is 3686849. The next prime is 3686867. The reversal of 3686864 is 4686863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3686867) 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, 1217 + ... + 2975.

It is an arithmetic number, because the mean of its divisors is an integer number (360096).

Almost surely, 2^3686864 is an apocalyptic number.

It is an amenable number.

3686864 is a deficient number, since it is larger than the sum of its proper divisors (3515056).

3686864 is a wasteful number, since it uses less digits than its factorization.

3686864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898 (or 1892 counting only the distinct ones).

The product of its digits is 165888, while the sum is 41.

The square root of 3686864 is about 1920.1208295313. The cubic root of 3686864 is about 154.4847825595.

Subtracting 3686864 from its reverse (4686863), we obtain a palindrome (999999).

The spelling of 3686864 in words is "three million, six hundred eighty-six thousand, eight hundred sixty-four".