9988730766 has 96 divisors (see below), whose sum is σ = 27327725568. Its totient is φ = 2569248000.

The previous prime is 9988730669. The next prime is 9988730777. The reversal of 9988730766 is 6670378899.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52110 + ... + 150641.

It is an arithmetic number, because the mean of its divisors is an integer number (284663808).

Almost surely, 2^9988730766 is an apocalyptic number.

9988730766 is an abundant number, since it is smaller than the sum of its proper divisors (17338994802).

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

9988730766 is a wasteful number, since it uses less digits than its factorization.

9988730766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202806 (or 202803 counting only the distinct ones).

The product of its (nonzero) digits is 27433728, while the sum is 63.

The square root of 9988730766 is about 99943.6379465947. The cubic root of 9988730766 is about 2153.6250915485.

The spelling of 9988730766 in words is "nine billion, nine hundred eighty-eight million, seven hundred thirty thousand, seven hundred sixty-six".