8640963 has 12 divisors (see below), whose sum is σ = 12693720. Its totient is φ = 5662656.

The previous prime is 8640949. The next prime is 8640967. The reversal of 8640963 is 3690468.

8640963 is a `hidden beast` number, since 8 + 640 + 9 + 6 + 3 = 666.

8640963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8640963 - 2⁸ = 8640707 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

8640963 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8640967) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7606 + ... + 8667.

It is an arithmetic number, because the mean of its divisors is an integer number (1057810).

Almost surely, 2^8640963 is an apocalyptic number.

8640963 is a deficient number, since it is larger than the sum of its proper divisors (4052757).

8640963 is a wasteful number, since it uses less digits than its factorization.

8640963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16338 (or 16335 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 8640963 is about 2939.5514964021. The cubic root of 8640963 is about 205.2047369607.

The spelling of 8640963 in words is "eight million, six hundred forty thousand, nine hundred sixty-three".