Square Root Calculator › Square root of 661
Square Root of 661
√661 ≈ 25.70992
661 is not a perfect square, so √661 is an irrational number that is approximately 25.70992. In simplified radical form, √661 = √661.
√661 lies between √625 = 25 and √676 = 26.
| Number | 661 |
| Square root (decimal) | 25.70992 |
| Simplified radical | √661 |
| Perfect square? | No |
| Rational? | No |
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Frequently asked questions
Is 661 a perfect square?
No, 661 is not a perfect square, so its square root is irrational and approximately 25.70992.
What is the square root of 661 in simplest radical form?
√661 = √661 in simplest radical form.