9865528608 has 96 divisors (see below), whose sum is σ = 28482644736. Its totient is φ = 2970943488.

The previous prime is 9865528577. The next prime is 9865528613. The reversal of 9865528608 is 8068255689.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25441 + ... + 142752.

It is an arithmetic number, because the mean of its divisors is an integer number (296694216).

Almost surely, 2^9865528608 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 9865528608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14241322368).

9865528608 is an abundant number, since it is smaller than the sum of its proper divisors (18617116128).

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

9865528608 is a wasteful number, since it uses less digits than its factorization.

9865528608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168266 (or 168258 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 57.

The square root of 9865528608 is about 99325.3673942362. The cubic root of 9865528608 is about 2144.7340830205.

The spelling of 9865528608 in words is "nine billion, eight hundred sixty-five million, five hundred twenty-eight thousand, six hundred eight".