8663963 has 24 divisors (see below), whose sum is σ = 11146464. Its totient is φ = 6589440.

The previous prime is 8663959. The next prime is 8663969. The reversal of 8663963 is 3693668.

It is not a de Polignac number, because 8663963 - 2² = 8663959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8663963.

It is not an unprimeable number, because it can be changed into a prime (8663969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44795 + ... + 44987.

It is an arithmetic number, because the mean of its divisors is an integer number (464436).

Almost surely, 2^8663963 is an apocalyptic number.

8663963 is a deficient number, since it is larger than the sum of its proper divisors (2482501).

8663963 is a wasteful number, since it uses less digits than its factorization.

8663963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275 (or 264 counting only the distinct ones).

The product of its digits is 139968, while the sum is 41.

The square root of 8663963 is about 2943.4610580064. The cubic root of 8663963 is about 205.3866429044.

The spelling of 8663963 in words is "eight million, six hundred sixty-three thousand, nine hundred sixty-three".