3906666 has 24 divisors (see below), whose sum is σ = 8910720. Its totient is φ = 1233576.

The previous prime is 3906659. The next prime is 3906667. The reversal of 3906666 is 6666093.

3906666 is a modest number, since divided by 6666 gives 390 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 3906666.

It is not an unprimeable number, because it can be changed into a prime (3906667) 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 11 ways as a sum of consecutive naturals, for example, 5370 + ... + 6053.

It is an arithmetic number, because the mean of its divisors is an integer number (371280).

Almost surely, 2^3906666 is an apocalyptic number.

3906666 is an abundant number, since it is smaller than the sum of its proper divisors (5004054).

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

3906666 is a wasteful number, since it uses less digits than its factorization.

3906666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11450 (or 11447 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

The square root of 3906666 is about 1976.5287754040. The cubic root of 3906666 is about 157.4957217281.

It can be divided in two parts, 390 and 6666, that added together give a square (7056 = 84²).

The spelling of 3906666 in words is "three million, nine hundred six thousand, six hundred sixty-six".