8640896 has 96 divisors (see below), whose sum is σ = 20985480. Its totient is φ = 3502080.

The previous prime is 8640889. The next prime is 8640911. The reversal of 8640896 is 6980468.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 454775 + ... + 454793.

Almost surely, 2^8640896 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 8640896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10492740).

8640896 is an abundant number, since it is smaller than the sum of its proper divisors (12344584).

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

8640896 is a wasteful number, since it uses less digits than its factorization.

8640896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 8640896 is about 2939.5401000837. The cubic root of 8640896 is about 205.2042065896.

The spelling of 8640896 in words is "eight million, six hundred forty thousand, eight hundred ninety-six".