8688315920 has 20 divisors (see below), whose sum is σ = 20200334700. Its totient is φ = 3475326336.

The previous prime is 8688315907. The next prime is 8688315931. The reversal of 8688315920 is 295138868.

It can be written as a sum of positive squares in 2 ways, for example, as 6176702464 + 2511613456 = 78592^2 + 50116^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54301895 + ... + 54302054.

It is an arithmetic number, because the mean of its divisors is an integer number (1010016735).

Almost surely, 2^8688315920 is an apocalyptic number.

8688315920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8688315920 is an abundant number, since it is smaller than the sum of its proper divisors (11512018780).

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

8688315920 is a wasteful number, since it uses less digits than its factorization.

8688315920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108603962 (or 108603956 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 50.

The square root of 8688315920 is about 93211.1362445497. The cubic root of 8688315920 is about 2055.7889847377.

The spelling of 8688315920 in words is "eight billion, six hundred eighty-eight million, three hundred fifteen thousand, nine hundred twenty".