3666668 has 12 divisors (see below), whose sum is σ = 6464472. Its totient is φ = 1819680.

The previous prime is 3666661. The next prime is 3666703. The reversal of 3666668 is 8666663.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3666661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2798 + ... + 3893.

It is an arithmetic number, because the mean of its divisors is an integer number (538706).

Almost surely, 2^3666668 is an apocalyptic number.

It is an amenable number.

3666668 is a deficient number, since it is larger than the sum of its proper divisors (2797804).

3666668 is a wasteful number, since it uses less digits than its factorization.

3666668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6832 (or 6830 counting only the distinct ones).

The product of its digits is 186624, while the sum is 41.

The square root of 3666668 is about 1914.8545636680. The cubic root of 3666668 is about 154.2021856639.

It can be divided in two parts, 3666 and 668, that added together give a palindrome (4334).

The spelling of 3666668 in words is "three million, six hundred sixty-six thousand, six hundred sixty-eight".