6663716576 has 96 divisors (see below), whose sum is σ = 15563796192. Its totient is φ = 2773647360.

The previous prime is 6663716567. The next prime is 6663716581. The reversal of 6663716576 is 6756173666.

It is a happy number.

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, 206360 + ... + 236456.

It is an arithmetic number, because the mean of its divisors is an integer number (162122877).

Almost surely, 2^6663716576 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6663716576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7781898096).

6663716576 is an abundant number, since it is smaller than the sum of its proper divisors (8900079616).

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

6663716576 is a wasteful number, since it uses less digits than its factorization.

6663716576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30172 (or 30164 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 53.

The square root of 6663716576 is about 81631.5905516976. The cubic root of 6663716576 is about 1881.7944026421.

The spelling of 6663716576 in words is "six billion, six hundred sixty-three million, seven hundred sixteen thousand, five hundred seventy-six".