3689986 has 8 divisors (see below), whose sum is σ = 5860620. Its totient is φ = 1736448.

The previous prime is 3689963. The next prime is 3689993. The reversal of 3689986 is 6899863.

It can be written as a sum of positive squares in 2 ways, for example, as 3080025 + 609961 = 1755^2 + 781^2 .

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

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, 54231 + ... + 54298.

Almost surely, 2^3689986 is an apocalyptic number.

3689986 is a deficient number, since it is larger than the sum of its proper divisors (2170634).

3689986 is a wasteful number, since it uses less digits than its factorization.

3689986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108548.

The product of its digits is 559872, while the sum is 49.

The square root of 3689986 is about 1920.9336271720. The cubic root of 3689986 is about 154.5283756528.

The spelling of 3689986 in words is "three million, six hundred eighty-nine thousand, nine hundred eighty-six".