9656100720 has 840 divisors, whose sum is σ = 40789710720. Its totient is φ = 2116316160.

The previous prime is 9656100647. The next prime is 9656100721. The reversal of 9656100720 is 270016569.

9656100720 is a `hidden beast` number, since 96 + 561 + 0 + 0 + 7 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (840).

It is a super-2 number, since 2×9656100720² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9656100721) by changing a digit.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 88588026 + ... + 88588134.

Almost surely, 2^9656100720 is an apocalyptic number.

9656100720 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9656100720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20394855360).

9656100720 is an abundant number, since it is smaller than the sum of its proper divisors (31133610000).

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

9656100720 is a wasteful number, since it uses less digits than its factorization.

9656100720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 9656100720 is about 98265.4604629724. The cubic root of 9656100720 is about 2129.4490937878.

The spelling of 9656100720 in words is "nine billion, six hundred fifty-six million, one hundred thousand, seven hundred twenty".