It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a Duffinian number.
It is a taxicab number since it can be written as a sum of two cubes in more than one way. Here 20683 = 103 + 273 = 193 + 243.
It is a nialpdrome in base 12, base 13 and base 14.
It is a zygodrome in base 12.
It is a self number, because there is not a number n which added to its sum of digits gives 20683.
220683 is an apocalyptic number.
20683 is a wasteful number, since it uses less digits than its factorization.
20683 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 93.
The square root of 20683 is about 143.8158544807. The cubic root of 20683 is about 27.4497152712.
The spelling of 20683 in words is "twenty thousand, six hundred eighty-three".