3686642085 has 32 divisors (see below), whose sum is σ = 6748895232. Its totient is φ = 1683420480.

The previous prime is 3686642033. The next prime is 3686642111. The reversal of 3686642085 is 5802466863.

It is not a de Polignac number, because 3686642085 - 2⁷ = 3686641957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75880 + ... + 114590.

It is an arithmetic number, because the mean of its divisors is an integer number (210902976).

Almost surely, 2^3686642085 is an apocalyptic number.

3686642085 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3686642085 is a deficient number, since it is larger than the sum of its proper divisors (3062253147).

3686642085 is a wasteful number, since it uses less digits than its factorization.

3686642085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39633.

The product of its (nonzero) digits is 1658880, while the sum is 48.

The square root of 3686642085 is about 60717.7246362213. The cubic root of 3686642085 is about 1544.8168298050.

The spelling of 3686642085 in words is "three billion, six hundred eighty-six million, six hundred forty-two thousand, eighty-five".