It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 36622 = 2 ⋅18311.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-22663 is a prime.
It is a d-powerful number, because it can be written as 27 + 213 + 6 + 65 + 38 .
It is a Duffinian number.
It is a plaindrome in base 12 and base 15.
It is a self number, because there is not a number n which added to its sum of digits gives 22663.
It is a congruent number.
222663 is an apocalyptic number.
22663 is a wasteful number, since it uses less digits than its factorization.
22663 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 304.
The square root of 22663 is about 150.5423528446. The cubic root of 22663 is about 28.2990897334.
The spelling of 22663 in words is "twenty-two thousand, six hundred sixty-three".