6644842228 has 24 divisors (see below), whose sum is σ = 11816118720. Its totient is φ = 3269027520.

The previous prime is 6644842153. The next prime is 6644842231. The reversal of 6644842228 is 8222484466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95193 + ... + 149503.

It is an arithmetic number, because the mean of its divisors is an integer number (492338280).

Almost surely, 2^6644842228 is an apocalyptic number.

It is an amenable number.

6644842228 is a deficient number, since it is larger than the sum of its proper divisors (5171276492).

6644842228 is a wasteful number, since it uses less digits than its factorization.

6644842228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54807 (or 54805 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 46.

The square root of 6644842228 is about 81515.9016879529. The cubic root of 6644842228 is about 1880.0160542616.

The spelling of 6644842228 in words is "six billion, six hundred forty-four million, eight hundred forty-two thousand, two hundred twenty-eight".