9699630640 has 120 divisors (see below), whose sum is σ = 26336698272. Its totient is φ = 3254415360.

The previous prime is 9699630599. The next prime is 9699630683. The reversal of 9699630640 is 460369969.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1233120 + ... + 1240960.

Almost surely, 2^9699630640 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 9699630640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13168349136).

9699630640 is an abundant number, since it is smaller than the sum of its proper divisors (16637067632).

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

9699630640 is a wasteful number, since it uses less digits than its factorization.

9699630640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7955 (or 7902 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 52.

The square root of 9699630640 is about 98486.7028588124. The cubic root of 9699630640 is about 2132.6441656280.

The spelling of 9699630640 in words is "nine billion, six hundred ninety-nine million, six hundred thirty thousand, six hundred forty".