It is a congruent number.
It is an unprimeable number.
84680 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
284680 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 84680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99900).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
84680 is a wasteful number, since it uses less digits than its factorization.
84680 is an odious number, because the sum of its binary digits is odd.
The square root of 84680 is about 290.9982817819. The cubic root of 84680 is about 43.9130514343.
The spelling of 84680 in words is "eighty-four thousand, six hundred eighty".