Square Root Calculator › Square root of 646
Square Root of 646
√646 ≈ 25.41653
646 is not a perfect square, so √646 is an irrational number that is approximately 25.41653. In simplified radical form, √646 = √646.
√646 lies between √625 = 25 and √676 = 26.
| Number | 646 |
| Square root (decimal) | 25.41653 |
| Simplified radical | √646 |
| Perfect square? | No |
| Rational? | No |
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Frequently asked questions
Is 646 a perfect square?
No, 646 is not a perfect square, so its square root is irrational and approximately 25.41653.
What is the square root of 646 in simplest radical form?
√646 = √646 in simplest radical form.