9721700716 has 96 divisors (see below), whose sum is σ = 22770502272. Its totient is φ = 3521802240.

The previous prime is 9721700713. The next prime is 9721700731. The reversal of 9721700716 is 6170071279.

It is a super-2 number, since 2×9721700716² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9721700713) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 207726 + ... + 250186.

It is an arithmetic number, because the mean of its divisors is an integer number (237192732).

Almost surely, 2^9721700716 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 9721700716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11385251136).

9721700716 is an abundant number, since it is smaller than the sum of its proper divisors (13048801556).

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

9721700716 is a wasteful number, since it uses less digits than its factorization.

9721700716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42539 (or 42537 counting only the distinct ones).

The product of its (nonzero) digits is 37044, while the sum is 40.

The square root of 9721700716 is about 98598.6851636471. The cubic root of 9721700716 is about 2134.2604459157.

The spelling of 9721700716 in words is "nine billion, seven hundred twenty-one million, seven hundred thousand, seven hundred sixteen".