8668666 has 8 divisors (see below), whose sum is σ = 13083264. Its totient is φ = 4307580.

The previous prime is 8668643. The next prime is 8668687. The reversal of 8668666 is 6668668.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12970 + ... + 13621.

It is an arithmetic number, because the mean of its divisors is an integer number (1635408).

Almost surely, 2^8668666 is an apocalyptic number.

8668666 is a deficient number, since it is larger than the sum of its proper divisors (4414598).

8668666 is a wasteful number, since it uses less digits than its factorization.

8668666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26756.

The product of its digits is 497664, while the sum is 46.

The square root of 8668666 is about 2944.2598390767. The cubic root of 8668666 is about 205.4237990594.

The spelling of 8668666 in words is "eight million, six hundred sixty-eight thousand, six hundred sixty-six".