8659537920 has 312 divisors, whose sum is σ = 32752467072. Its totient is φ = 2098790400.

The previous prime is 8659537903. The next prime is 8659537921. The reversal of 8659537920 is 297359568.

8659537920 is a `hidden beast` number, since 86 + 5 + 9 + 537 + 9 + 20 = 666.

It is not an unprimeable number, because it can be changed into a prime (8659537921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2025385 + ... + 2029655.

It is an arithmetic number, because the mean of its divisors is an integer number (104975856).

Almost surely, 2^8659537920 is an apocalyptic number.

8659537920 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 8659537920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16376233536).

8659537920 is an abundant number, since it is smaller than the sum of its proper divisors (24092929152).

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

8659537920 is a wasteful number, since it uses less digits than its factorization.

8659537920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4317 (or 4292 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 54.

The square root of 8659537920 is about 93056.6382371510. The cubic root of 8659537920 is about 2053.5167018266.

The spelling of 8659537920 in words is "eight billion, six hundred fifty-nine million, five hundred thirty-seven thousand, nine hundred twenty".