6668866 has 8 divisors (see below), whose sum is σ = 10051344. Its totient is φ = 3318420.

The previous prime is 6668861. The next prime is 6668881. The reversal of 6668866 is 6688666.

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

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (6668861) 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, 7480 + ... + 8323.

It is an arithmetic number, because the mean of its divisors is an integer number (1256418).

Almost surely, 2^6668866 is an apocalyptic number.

6668866 is a deficient number, since it is larger than the sum of its proper divisors (3382478).

6668866 is a wasteful number, since it uses less digits than its factorization.

6668866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16016.

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

The square root of 6668866 is about 2582.4147614200. The cubic root of 6668866 is about 188.2279000198.

The spelling of 6668866 in words is "six million, six hundred sixty-eight thousand, eight hundred sixty-six".