6664228 has 12 divisors (see below), whose sum is σ = 11748492. Its totient is φ = 3307520.

The previous prime is 6664223. The next prime is 6664237. The reversal of 6664228 is 8224666.

It can be written as a sum of positive squares in 2 ways, for example, as 2696164 + 3968064 = 1642^2 + 1992^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6664193 and 6664202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6664223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5533 + ... + 6628.

It is an arithmetic number, because the mean of its divisors is an integer number (979041).

Almost surely, 2^6664228 is an apocalyptic number.

It is an amenable number.

6664228 is a deficient number, since it is larger than the sum of its proper divisors (5084264).

6664228 is a wasteful number, since it uses less digits than its factorization.

6664228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12302 (or 12300 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

The square root of 6664228 is about 2581.5166085075. The cubic root of 6664228 is about 188.1842542455.

The spelling of 6664228 in words is "six million, six hundred sixty-four thousand, two hundred twenty-eight".