Square Root Calculator › Square root of 678
Square Root of 678
√678 ≈ 26.038433
678 is not a perfect square, so √678 is an irrational number that is approximately 26.038433. In simplified radical form, √678 = √678.
√678 lies between √676 = 26 and √729 = 27.
| Number | 678 |
| Square root (decimal) | 26.038433 |
| Simplified radical | √678 |
| Perfect square? | No |
| Rational? | No |
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Frequently asked questions
Is 678 a perfect square?
No, 678 is not a perfect square, so its square root is irrational and approximately 26.038433.
What is the square root of 678 in simplest radical form?
√678 = √678 in simplest radical form.