3986685 has 16 divisors (see below), whose sum is σ = 7087680. Its totient is φ = 2126160.

The previous prime is 3986677. The next prime is 3986699. The reversal of 3986685 is 5866893.

It is not a de Polignac number, because 3986685 - 2³ = 3986677 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 3986685.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14631 + ... + 14900.

It is an arithmetic number, because the mean of its divisors is an integer number (442980).

Almost surely, 2^3986685 is an apocalyptic number.

It is an amenable number.

3986685 is a deficient number, since it is larger than the sum of its proper divisors (3100995).

3986685 is a wasteful number, since it uses less digits than its factorization.

3986685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29545 (or 29539 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 3986685 is about 1996.6684752357. The cubic root of 3986685 is about 158.5637740227.

The spelling of 3986685 in words is "three million, nine hundred eighty-six thousand, six hundred eighty-five".