3686658 has 16 divisors (see below), whose sum is σ = 7413120. Its totient is φ = 1222256.

The previous prime is 3686651. The next prime is 3686663. The reversal of 3686658 is 8566863.

It is not an unprimeable number, because it can be changed into a prime (3686651) 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, 378 + ... + 2741.

It is an arithmetic number, because the mean of its divisors is an integer number (463320).

Almost surely, 2^3686658 is an apocalyptic number.

3686658 is an abundant number, since it is smaller than the sum of its proper divisors (3726462).

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

3686658 is a wasteful number, since it uses less digits than its factorization.

3686658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3321.

The product of its digits is 207360, while the sum is 42.

The square root of 3686658 is about 1920.0671863245. The cubic root of 3686658 is about 154.4819052761.

The spelling of 3686658 in words is "three million, six hundred eighty-six thousand, six hundred fifty-eight".