1682 is an esthetic number in base 5, because in such base its adjacent digits differ by 1.
It is an ABA number since it can be written as A⋅BA, here for A=2, B=29.
It is an Ulam number.
It is a Duffinian number.
It is a plaindrome in base 9 and base 11.
It is a nialpdrome in base 8, base 12, base 14 and base 15.
It is a self number, because there is not a number n which added to its sum of digits gives 1682.
It is an unprimeable number.
1682 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
21682 is an apocalyptic number.
1682 is an equidigital number, since it uses as much as digits as its factorization.
1682 is an odious number, because the sum of its binary digits is odd.
The square root of 1682 is about 41.0121933088. The cubic root of 1682 is about 11.8925594332.
The spelling of 1682 in words is "one thousand, six hundred eighty-two".