6660228 has 24 divisors (see below), whose sum is σ = 15755488. Its totient is φ = 2189376.

The previous prime is 6660221. The next prime is 6660233. The reversal of 6660228 is 8220666.

It is a junction number, because it is equal to n+sod(n) for n = 6660195 and 6660204.

It is not an unprimeable number, because it can be changed into a prime (6660221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2926 + ... + 4677.

Almost surely, 2^6660228 is an apocalyptic number.

It is an amenable number.

6660228 is an abundant number, since it is smaller than the sum of its proper divisors (9095260).

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

6660228 is a wasteful number, since it uses less digits than its factorization.

6660228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7683 (or 7681 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 6660228 is about 2580.7417538375. The cubic root of 6660228 is about 188.1465960866.

The spelling of 6660228 in words is "six million, six hundred sixty thousand, two hundred twenty-eight".