9988306064 has 30 divisors (see below), whose sum is σ = 21271587750. Its totient is φ = 4540138240.

The previous prime is 9988306037. The next prime is 9988306067. The reversal of 9988306064 is 4606038899.

It can be written as a sum of positive squares in only one way, i.e., 7993790464 + 1994515600 = 89408^2 + 44660^2 .

It is a junction number, because it is equal to n+sod(n) for n = 9988305997 and 9988306015.

It is not an unprimeable number, because it can be changed into a prime (9988306067) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2577689 + ... + 2581560.

It is an arithmetic number, because the mean of its divisors is an integer number (709052925).

Almost surely, 2^9988306064 is an apocalyptic number.

It is an amenable number.

9988306064 is an abundant number, since it is smaller than the sum of its proper divisors (11283281686).

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

9988306064 is a wasteful number, since it uses less digits than its factorization.

9988306064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5159279 (or 5159262 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 53.

The square root of 9988306064 is about 99941.5132164808. The cubic root of 9988306064 is about 2153.5945684231.

The spelling of 9988306064 in words is "nine billion, nine hundred eighty-eight million, three hundred six thousand, sixty-four".