6681228 has 12 divisors (see below), whose sum is σ = 15589560. Its totient is φ = 2227072.

The previous prime is 6681209. The next prime is 6681239. The reversal of 6681228 is 8221866.

6681228 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278373 + ... + 278396.

It is an arithmetic number, because the mean of its divisors is an integer number (1299130).

Almost surely, 2^6681228 is an apocalyptic number.

It is an amenable number.

6681228 is an abundant number, since it is smaller than the sum of its proper divisors (8908332).

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

6681228 is a wasteful number, since it uses less digits than its factorization.

6681228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556776 (or 556774 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 6681228 is about 2584.8071494794. The cubic root of 6681228 is about 188.3441335250.

The spelling of 6681228 in words is "six million, six hundred eighty-one thousand, two hundred twenty-eight".