6644422892 has 24 divisors (see below), whose sum is σ = 12257285040. Its totient is φ = 3142843200.

The previous prime is 6644422877. The next prime is 6644422903. The reversal of 6644422892 is 2982244466.

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, 9083 + ... + 115634.

It is an arithmetic number, because the mean of its divisors is an integer number (510720210).

Almost surely, 2^6644422892 is an apocalyptic number.

It is an amenable number.

6644422892 is a deficient number, since it is larger than the sum of its proper divisors (5612862148).

6644422892 is a wasteful number, since it uses less digits than its factorization.

6644422892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125441 (or 125439 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 47.

The square root of 6644422892 is about 81513.3295357269. The cubic root of 6644422892 is about 1879.9765060441.

The spelling of 6644422892 in words is "six billion, six hundred forty-four million, four hundred twenty-two thousand, eight hundred ninety-two".