6637228 has 24 divisors (see below), whose sum is σ = 12634160. Its totient is φ = 3032640.

The previous prime is 6637223. The next prime is 6637229. The reversal of 6637228 is 8227366.

It is a junction number, because it is equal to n+sod(n) for n = 6637193 and 6637202.

It is not an unprimeable number, because it can be changed into a prime (6637223) 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, 5083 + ... + 6253.

Almost surely, 2^6637228 is an apocalyptic number.

It is an amenable number.

6637228 is a deficient number, since it is larger than the sum of its proper divisors (5996932).

6637228 is a wasteful number, since it uses less digits than its factorization.

6637228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297 (or 1295 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 6637228 is about 2576.2818168826. The cubic root of 6637228 is about 187.9297685457.

The spelling of 6637228 in words is "six million, six hundred thirty-seven thousand, two hundred twenty-eight".