6664516803 has 72 divisors (see below), whose sum is σ = 11600574336. Its totient is φ = 3672345600.

The previous prime is 6664516801. The next prime is 6664516811. The reversal of 6664516803 is 3086154666.

It is not a de Polignac number, because 6664516803 - 2¹ = 6664516801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6664516801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4825173 + ... + 4826553.

It is an arithmetic number, because the mean of its divisors is an integer number (161119088).

Almost surely, 2^6664516803 is an apocalyptic number.

6664516803 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

6664516803 is a deficient number, since it is larger than the sum of its proper divisors (4936057533).

6664516803 is a wasteful number, since it uses less digits than its factorization.

6664516803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785 (or 1775 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 6664516803 is about 81636.4918587270. The cubic root of 6664516803 is about 1881.8697260945.

The spelling of 6664516803 in words is "six billion, six hundred sixty-four million, five hundred sixteen thousand, eight hundred three".