Is 660 a perfect square?

No, 660 is not a perfect square. Its square root is irrational.

What is 25.6904651573 squared?

25.6904651573 squared is approximately 660. (25.6904651573)² ≈ 660

√660 = 25.6904651573. 660 is not a perfect square; the result is irrational.

Instant answer with step-by-step solution

√660 = 25.6904651573

√660 = 25.6904651573

⚠ 660 is not a perfect square — result rounded to 10 significant figures

We need to find √660 — a number that when multiplied by itself equals 660.
660 is not a perfect square. Its square root is irrational.
It falls between √625 = 25 and √676 = 26.
Using the formula √N = N^(1/2): √660 = 660^0.5 = 25.6904651573
Verification: 25.6904651573 × 25.6904651573 ≈ 660 ✓ (rounded to 10 significant figures)

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