8663 has 2 divisors, whose sum is σ = 8664.
Its totient is φ = 8662.
The previous prime is 8647. The next prime is 8669. The reversal of 8663 is 3668.
It is a strong prime.
It is a cyclic number.
It is not a de Polignac number, because 8663 - 24 = 8647 is a prime.
It is a Sophie Germain prime.
It is a Chen prime.
It is a nialpdrome in base 10.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 8663.
It is not a weakly prime, because it can be changed into another prime (8669) by changing a digit.
It is a good prime.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4331 + 4332.
It is an arithmetic number, because the mean of its divisors is an integer number (4332).
28663 is an apocalyptic number.
8663 is a deficient number, since it is larger than the sum of its proper divisors (1).
8663 is an equidigital number, since it uses as much as digits as its factorization.
8663 is an evil number, because the sum of its binary digits is even.
The product of its digits is 864, while the sum is 23.
The square root of 8663 is about 93.0752383827.
The cubic root of 8663 is about 20.5379033043.
The spelling of 8663 in words is "eight thousand, six hundred sixty-three".