Square Root Calculator › Square root of 660
Square Root of 660
√660 ≈ 25.690465
660 is not a perfect square, so √660 is an irrational number that is approximately 25.690465. In simplified radical form, √660 = 2√165.
√660 lies between √625 = 25 and √676 = 26.
| Number | 660 |
| Square root (decimal) | 25.690465 |
| Simplified radical | 2√165 |
| Perfect square? | No |
| Rational? | No |
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Frequently asked questions
Is 660 a perfect square?
No, 660 is not a perfect square, so its square root is irrational and approximately 25.690465.
What is the square root of 660 in simplest radical form?
√660 = 2√165 in simplest radical form.