Square Root Calculator › Square root of 866
Square Root of 866
√866 ≈ 29.427878
866 is not a perfect square, so √866 is an irrational number that is approximately 29.427878. In simplified radical form, √866 = √866.
√866 lies between √841 = 29 and √900 = 30.
| Number | 866 |
| Square root (decimal) | 29.427878 |
| Simplified radical | √866 |
| Perfect square? | No |
| Rational? | No |
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Frequently asked questions
Is 866 a perfect square?
No, 866 is not a perfect square, so its square root is irrational and approximately 29.427878.
What is the square root of 866 in simplest radical form?
√866 = √866 in simplest radical form.