9685912720 has 320 divisors, whose sum is σ = 27383961600. Its totient is φ = 3144683520.

The previous prime is 9685912699. The next prime is 9685912723. The reversal of 9685912720 is 272195869.

It is not an unprimeable number, because it can be changed into a prime (9685912723) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34225699 + ... + 34225981.

It is an arithmetic number, because the mean of its divisors is an integer number (85574880).

Almost surely, 2^9685912720 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 9685912720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13691980800).

9685912720 is an abundant number, since it is smaller than the sum of its proper divisors (17698048880).

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

9685912720 is a wasteful number, since it uses less digits than its factorization.

9685912720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 9685912720 is about 98417.0347043641. The cubic root of 9685912720 is about 2131.6383113604.

The spelling of 9685912720 in words is "nine billion, six hundred eighty-five million, nine hundred twelve thousand, seven hundred twenty".