3956666 has 16 divisors (see below), whose sum is σ = 6809280. Its totient is φ = 1689120.

The previous prime is 3956663. The next prime is 3956671. The reversal of 3956666 is 6666593.

It is not an unprimeable number, because it can be changed into a prime (3956663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5381 + ... + 6071.

It is an arithmetic number, because the mean of its divisors is an integer number (425580).

Almost surely, 2^3956666 is an apocalyptic number.

3956666 is a deficient number, since it is larger than the sum of its proper divisors (2852614).

3956666 is a wasteful number, since it uses less digits than its factorization.

3956666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109.

The product of its digits is 174960, while the sum is 41.

The square root of 3956666 is about 1989.1369988012. The cubic root of 3956666 is about 158.1647856165.

The spelling of 3956666 in words is "three million, nine hundred fifty-six thousand, six hundred sixty-six".