8717800668 has 24 divisors (see below), whose sum is σ = 21538096272. Its totient is φ = 2734996224.

The previous prime is 8717800661. The next prime is 8717800681. The reversal of 8717800668 is 8660087178.

8717800668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 8717800668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8717800661) 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 7 ways as a sum of consecutive naturals, for example, 21366955 + ... + 21367362.

It is an arithmetic number, because the mean of its divisors is an integer number (897420678).

Almost surely, 2^8717800668 is an apocalyptic number.

It is an amenable number.

8717800668 is an abundant number, since it is smaller than the sum of its proper divisors (12820295604).

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

8717800668 is a wasteful number, since it uses less digits than its factorization.

8717800668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42734341 (or 42734339 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 51.

The square root of 8717800668 is about 93369.1633677843. The cubic root of 8717800668 is about 2058.1118737946. Note that the first 3 decimals are identical.

The spelling of 8717800668 in words is "eight billion, seven hundred seventeen million, eight hundred thousand, six hundred sixty-eight".