6678220 has 12 divisors (see below), whose sum is σ = 14024304. Its totient is φ = 2671280.

The previous prime is 6678209. The next prime is 6678227. The reversal of 6678220 is 228766.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6678227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166936 + ... + 166975.

It is an arithmetic number, because the mean of its divisors is an integer number (1168692).

Almost surely, 2^6678220 is an apocalyptic number.

It is an amenable number.

6678220 is an abundant number, since it is smaller than the sum of its proper divisors (7346084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6678220 is a wasteful number, since it uses less digits than its factorization.

6678220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333920 (or 333918 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 6678220 is about 2584.2252223829. The cubic root of 6678220 is about 188.3158640613.

The spelling of 6678220 in words is "six million, six hundred seventy-eight thousand, two hundred twenty".