9645856 has 48 divisors (see below), whose sum is σ = 21077280. Its totient is φ = 4308480.

The previous prime is 9645833. The next prime is 9645859. The reversal of 9645856 is 6585469.

It is not an unprimeable number, because it can be changed into a prime (9645859) 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, 23380 + ... + 23788.

It is an arithmetic number, because the mean of its divisors is an integer number (439110).

Almost surely, 2^9645856 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 9645856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10538640).

9645856 is an abundant number, since it is smaller than the sum of its proper divisors (11431424).

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

9645856 is a wasteful number, since it uses less digits than its factorization.

9645856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497 (or 489 counting only the distinct ones).

The product of its digits is 259200, while the sum is 43.

The square root of 9645856 is about 3105.7778413789. Note that the first 3 decimals coincide. The cubic root of 9645856 is about 212.8695741751.

It can be divided in two parts, 9645 and 856, that added together give a palindrome (10501).

The spelling of 9645856 in words is "nine million, six hundred forty-five thousand, eight hundred fifty-six".