9992065720 has 384 divisors, whose sum is σ = 30011627520. Its totient is φ = 2909491200.

The previous prime is 9992065717. The next prime is 9992065751. The reversal of 9992065720 is 275602999.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 140733285 + ... + 140733355.

It is an arithmetic number, because the mean of its divisors is an integer number (78155280).

Almost surely, 2^9992065720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9992065720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15005813760).

9992065720 is an abundant number, since it is smaller than the sum of its proper divisors (20019561800).

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

9992065720 is a wasteful number, since it uses less digits than its factorization.

9992065720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 49.

The square root of 9992065720 is about 99960.3207277768. The cubic root of 9992065720 is about 2153.8647429989.

The spelling of 9992065720 in words is "nine billion, nine hundred ninety-two million, sixty-five thousand, seven hundred twenty".