3986668 has 12 divisors (see below), whose sum is σ = 7973392. Its totient is φ = 1708560.

The previous prime is 3986663. The next prime is 3986669. The reversal of 3986668 is 8666893.

It is a happy number.

3986668 is nontrivially palindromic in base 13.

3986668 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (3986663) by changing a digit.

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, 71163 + ... + 71218.

Almost surely, 2^3986668 is an apocalyptic number.

It is an amenable number.

3986668 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3986668 is a wasteful number, since it uses less digits than its factorization.

3986668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142392 (or 142390 counting only the distinct ones).

The product of its digits is 373248, while the sum is 46.

The square root of 3986668 is about 1996.6642181398. The cubic root of 3986668 is about 158.5635486401.

The spelling of 3986668 in words is "three million, nine hundred eighty-six thousand, six hundred sixty-eight".