Square Root Calculator › Square root of 665
Square Root of 665
√665 ≈ 25.787594
665 is not a perfect square, so √665 is an irrational number that is approximately 25.787594. In simplified radical form, √665 = √665.
√665 lies between √625 = 25 and √676 = 26.
| Number | 665 |
| Square root (decimal) | 25.787594 |
| Simplified radical | √665 |
| Perfect square? | No |
| Rational? | No |
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Frequently asked questions
Is 665 a perfect square?
No, 665 is not a perfect square, so its square root is irrational and approximately 25.787594.
What is the square root of 665 in simplest radical form?
√665 = √665 in simplest radical form.