8688767920 has 80 divisors (see below), whose sum is σ = 23099021568. Its totient is φ = 2977493760.

The previous prime is 8688767917. The next prime is 8688767921. The reversal of 8688767920 is 297678868.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×8688767920² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8688767921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2199387 + ... + 2203333.

Almost surely, 2^8688767920 is an apocalyptic number.

8688767920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8688767920 is an abundant number, since it is smaller than the sum of its proper divisors (14410253648).

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

8688767920 is a wasteful number, since it uses less digits than its factorization.

8688767920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7898 (or 7892 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 61.

The square root of 8688767920 is about 93213.5608160100. The cubic root of 8688767920 is about 2055.8246341668.

The spelling of 8688767920 in words is "eight billion, six hundred eighty-eight million, seven hundred sixty-seven thousand, nine hundred twenty".