6663444064 has 24 divisors (see below), whose sum is σ = 13125874608. Its totient is φ = 3329888640.

The previous prime is 6663444043. The next prime is 6663444143. The reversal of 6663444064 is 4604443666.

It is a self number, because there is not a number n which added to its sum of digits gives 6663444064.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2734 + ... + 115474.

It is an arithmetic number, because the mean of its divisors is an integer number (546911442).

Almost surely, 2^6663444064 is an apocalyptic number.

It is an amenable number.

6663444064 is a deficient number, since it is larger than the sum of its proper divisors (6462430544).

6663444064 is a wasteful number, since it uses less digits than its factorization.

6663444064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114598 (or 114590 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 43.

The square root of 6663444064 is about 81629.9213769069. The cubic root of 6663444064 is about 1881.7687503632.

The spelling of 6663444064 in words is "six billion, six hundred sixty-three million, four hundred forty-four thousand, sixty-four".