√689 = 26.2488094968. 689 is not a perfect square; the result is irrational.

Is 689 a perfect square?

No, 689 is not a perfect square. Its square root is irrational.

What is 26.2488094968 squared?

26.2488094968 squared is approximately 689. (26.2488094968)² ≈ 689

Instant answer with step-by-step solution

√689 = 26.2488094968

√689 = 26.2488094968

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

We need to find √689 — a number that when multiplied by itself equals 689.
689 is not a perfect square. Its square root is irrational.
It falls between √676 = 26 and √729 = 27.
Using the formula √N = N^(1/2): √689 = 689^0.5 = 26.2488094968
Verification: 26.2488094968 × 26.2488094968 ≈ 689 ✓ (rounded to 10 significant figures)

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