6664044563 has 8 divisors (see below), whose sum is σ = 7272317376. Its totient is φ = 6056180200.

The previous prime is 6664044551. The next prime is 6664044577. The reversal of 6664044563 is 3654404666.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6664044563 - 2⁴ = 6664044547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6664044533) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 67481 + ... + 133722.

It is an arithmetic number, because the mean of its divisors is an integer number (909039672).

Almost surely, 2^6664044563 is an apocalyptic number.

6664044563 is a deficient number, since it is larger than the sum of its proper divisors (608272813).

6664044563 is a wasteful number, since it uses less digits than its factorization.

6664044563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204225.

The product of its (nonzero) digits is 1244160, while the sum is 44.

The square root of 6664044563 is about 81633.5994735011. The cubic root of 6664044563 is about 1881.8252760027.

The spelling of 6664044563 in words is "six billion, six hundred sixty-four million, forty-four thousand, five hundred sixty-three".