3686686 has 8 divisors (see below), whose sum is σ = 5559264. Its totient is φ = 1833600.

The previous prime is 3686677. The next prime is 3686701. The reversal of 3686686 is 6866863.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4390 + ... + 5161.

It is an arithmetic number, because the mean of its divisors is an integer number (694908).

Almost surely, 2^3686686 is an apocalyptic number.

3686686 is a deficient number, since it is larger than the sum of its proper divisors (1872578).

3686686 is a wasteful number, since it uses less digits than its factorization.

3686686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9746.

The product of its digits is 248832, while the sum is 43.

The square root of 3686686 is about 1920.0744777222. The cubic root of 3686686 is about 154.4822963694.

The spelling of 3686686 in words is "three million, six hundred eighty-six thousand, six hundred eighty-six".