3986680 has 16 divisors (see below), whose sum is σ = 8970120. Its totient is φ = 1594656.

The previous prime is 3986677. The next prime is 3986699. The reversal of 3986680 is 866893.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 99667 = 3986680 / (3 + 9 + 8 + 6 + 6 + 8 + 0).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49794 + ... + 49873.

Almost surely, 2^3986680 is an apocalyptic number.

It is an amenable number.

3986680 is an abundant number, since it is smaller than the sum of its proper divisors (4983440).

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

3986680 is a wasteful number, since it uses less digits than its factorization.

3986680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99678 (or 99674 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 3986680 is about 1996.6672231496. The cubic root of 3986680 is about 158.5637077337.

The spelling of 3986680 in words is "three million, nine hundred eighty-six thousand, six hundred eighty".