63863 has 2 divisors, whose sum is σ = 63864.
Its totient is φ = 63862.
The previous prime is 63857. The next prime is 63901. The reversal of 63863 is 36836.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 63863 - 26 = 63799 is a prime.
It is a Sophie Germain prime.
It is a nialpdrome in base 16.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (63803) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31931 + 31932.
It is an arithmetic number, because the mean of its divisors is an integer number (31932).
263863 is an apocalyptic number.
63863 is a deficient number, since it is larger than the sum of its proper divisors (1).
63863 is an equidigital number, since it uses as much as digits as its factorization.
63863 is an evil number, because the sum of its binary digits is even.
The product of its digits is 2592, while the sum is 26.
The square root of 63863 is about 252.7112977292.
The cubic root of 63863 is about 39.9714379434.
The spelling of 63863 in words is "sixty-three thousand, eight hundred sixty-three".