#1**0 **

Here are some reference numbers: \(\sqrt{2021} = 44.955\) and \(\sqrt[3]{2021} = 12.643\).

From 1 to 2021, there are 44 perfect squares and 12 perfect cubes.

From -2021 to -1, there are 12 perfect cubes. (squares can't be negative)

0 is a perfect square and a perfect cube, but you only count it once.

CubeyThePenguin Feb 22, 2021