Square Root Calculator › Square root of 685
Square Root of 685
√685 ≈ 26.172505
685 is not a perfect square, so √685 is an irrational number that is approximately 26.172505. In simplified radical form, √685 = √685.
√685 lies between √676 = 26 and √729 = 27.
| Number | 685 |
| Square root (decimal) | 26.172505 |
| Simplified radical | √685 |
| Perfect square? | No |
| Rational? | No |
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Frequently asked questions
Is 685 a perfect square?
No, 685 is not a perfect square, so its square root is irrational and approximately 26.172505.
What is the square root of 685 in simplest radical form?
√685 = √685 in simplest radical form.