Is 663 a perfect square?

No, 663 is not a perfect square. Its square root is irrational.

What is 25.7487863792 squared?

25.7487863792 squared is approximately 663. (25.7487863792)² ≈ 663

√663 = 25.7487863792. 663 is not a perfect square; the result is irrational.

Instant answer with step-by-step solution

√663 = 25.7487863792

√663 = 25.7487863792

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

We need to find √663 — a number that when multiplied by itself equals 663.
663 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): √663 = 663^0.5 = 25.7487863792
Verification: 25.7487863792 × 25.7487863792 ≈ 663 ✓ (rounded to 10 significant figures)

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