9659723264 has 80 divisors (see below), whose sum is σ = 20384445312. Its totient is φ = 4563744768.

The previous prime is 9659723243. The next prime is 9659723267. The reversal of 9659723264 is 4623279569.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9659723267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 972467 + ... + 982349.

Almost surely, 2^9659723264 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 9659723264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10192222656).

9659723264 is an abundant number, since it is smaller than the sum of its proper divisors (10724722048).

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

9659723264 is an equidigital number, since it uses as much as digits as its factorization.

9659723264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10007 (or 9991 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 53.

The square root of 9659723264 is about 98283.8911724602. The cubic root of 9659723264 is about 2129.7153523535.

The spelling of 9659723264 in words is "nine billion, six hundred fifty-nine million, seven hundred twenty-three thousand, two hundred sixty-four".