6678668 has 12 divisors (see below), whose sum is σ = 11717160. Its totient is φ = 3330912.

The previous prime is 6678667. The next prime is 6678691. The reversal of 6678668 is 8668766.

It is not an unprimeable number, because it can be changed into a prime (6678667) by changing a digit.

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, 113 + ... + 3656.

It is an arithmetic number, because the mean of its divisors is an integer number (976430).

Almost surely, 2^6678668 is an apocalyptic number.

It is an amenable number.

6678668 is a deficient number, since it is larger than the sum of its proper divisors (5038492).

6678668 is a wasteful number, since it uses less digits than its factorization.

6678668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4216 (or 4214 counting only the distinct ones).

The product of its digits is 580608, while the sum is 47.

The square root of 6678668 is about 2584.3119006807. The cubic root of 6678668 is about 188.3200749449.

The spelling of 6678668 in words is "six million, six hundred seventy-eight thousand, six hundred sixty-eight".