6644248344 has 64 divisors (see below), whose sum is σ = 18758844000. Its totient is φ = 2178437760.

The previous prime is 6644248291. The next prime is 6644248357. The reversal of 6644248344 is 4438424466.

6644248344 is a `hidden beast` number, since 6 + 64 + 4 + 248 + 344 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 6644248344.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 238959 + ... + 265310.

Almost surely, 2^6644248344 is an apocalyptic number.

It is an amenable number.

6644248344 is an abundant number, since it is smaller than the sum of its proper divisors (12114595656).

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

6644248344 is a wasteful number, since it uses less digits than its factorization.

6644248344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504345 (or 504335 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 45.

The square root of 6644248344 is about 81512.2588571805. The cubic root of 6644248344 is about 1879.9600436657.

The spelling of 6644248344 in words is "six billion, six hundred forty-four million, two hundred forty-eight thousand, three hundred forty-four".