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What is the Square Root of 685?

The square root of 685 is 26.1725046566. Calculate another value or review the exact form, nearby perfect powers, and verification.

Answer

Square Root√685 = 26.1725046566
CalculatedNon-perfect squareIrrational
Exact form√685
Perfect squareNo
Number typeIrrational
Verification26.17250465662 ≈ 685

On this page

How the answer is calculated

We solve x2 = 685. The resulting value is x = 26.1725046566.

Verification: 26.17250465662 ≈ 685.

Simplified radical form

The square root of 685 in simplified radical form is √685.

There are no square factors that can be taken outside the radical, so √685 is already in simplest radical form.

Nearest Perfect squares

PositionBaseValue
Lower or equal26676
Upper or equal27729

Nearby square roots

NumberSquare root
√68226.1151297144
√68326.1342686907
√68426.1533936612
√68526.1725046566
√68626.1916017074
√68726.2106848442
√68826.2297540972

Number properties

Is 685 a perfect square?

No. Its square root is not a whole number.

Is the square root rational or irrational?

√685 is irrational because 685 is not a perfect square.

Visual guide

Square Root function graph

See how the result changes as the input moves across positive and negative values. Square roots are shown for non-negative inputs; cube roots continue through negative inputs.

Common questions

Frequently asked questions

It asks for the number that, when raised to the power of 2, equals 685.