8640768 has 36 divisors (see below), whose sum is σ = 22999088. Its totient is φ = 2880000.

The previous prime is 8640767. The next prime is 8640781. The reversal of 8640768 is 8670468.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8640761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4858 + ... + 6393.

Almost surely, 2^8640768 is an apocalyptic number.

It is an amenable number.

8640768 is an abundant number, since it is smaller than the sum of its proper divisors (14358320).

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

8640768 is a wasteful number, since it uses less digits than its factorization.

8640768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11270 (or 11256 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 8640768 is about 2939.5183278898. The cubic root of 8640768 is about 205.2031933355.

The spelling of 8640768 in words is "eight million, six hundred forty thousand, seven hundred sixty-eight".