Is 217 a perfect square number?
No, 217 is not a perfect square number, as it has no square factors. The exact value obtained by taking the square, cube, or other roots of another number is known as the "perfect root." The fact that there is no whole number that, when multiplied by itself, equals 217, however, prevents 217 from being a perfect root of any number. Consequently, 217 is not a perfect root.