6678818 has 16 divisors (see below), whose sum is σ = 10402560. Its totient is φ = 3213600.

The previous prime is 6678817. The next prime is 6678839. The reversal of 6678818 is 8188766.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6678817) 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 7 ways as a sum of consecutive naturals, for example, 5963 + ... + 6993.

It is an arithmetic number, because the mean of its divisors is an integer number (650160).

Almost surely, 2^6678818 is an apocalyptic number.

6678818 is a deficient number, since it is larger than the sum of its proper divisors (3723742).

6678818 is a wasteful number, since it uses less digits than its factorization.

6678818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153.

The product of its digits is 129024, while the sum is 44.

The square root of 6678818 is about 2584.3409217826. The cubic root of 6678818 is about 188.3214847968.

The spelling of 6678818 in words is "six million, six hundred seventy-eight thousand, eight hundred eighteen".