8720959680 has 504 divisors, whose sum is σ = 32579011296. Its totient is φ = 2137006080.

The previous prime is 8720959601. The next prime is 8720959699. The reversal of 8720959680 is 869590278.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 63656572 + ... + 63656708.

Almost surely, 2^8720959680 is an apocalyptic number.

8720959680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8720959680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16289505648).

8720959680 is an abundant number, since it is smaller than the sum of its proper divisors (23858051616).

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

8720959680 is a wasteful number, since it uses less digits than its factorization.

8720959680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The square root of 8720959680 is about 93386.0786198885. The cubic root of 8720959680 is about 2058.3604385874.

The spelling of 8720959680 in words is "eight billion, seven hundred twenty million, nine hundred fifty-nine thousand, six hundred eighty".