Cube Root of 997

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What is the cube root of 997?

Answer

∛997 ≈
9.99

Real cube root: the only number whose cube is 997.

≈ — rounded to 4 decimal places. 997 is not the cube of a rational number, so ∛997 is irrational: its decimal expansion never ends and never repeats.

Prime factors
997 is a prime number: no triple of equal factors.
Between cubes
9³ = 729 < 997 < 1,000 = 10³, so 9 < ∛997 < 10 and ∛997 ≈ 9.99

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FAQ

What is the cube root of 997?

∛997 ≈ 9.99

Can ∛997 be simplified?

No: no prime appears three times in 997, so its only cube factor is 1 and ∛997 is already in simplest form. Since 9³ = 729 < 997 < 1,000 = 10³, ∛997 lies between 9 and 10: ∛997 ≈ 9.99.

Is ∛997 a rational number?

No: 997 is not the cube of a rational number, and the cube root of a fraction p/q in lowest terms is rational only when p and q are both cubes. So ∛997 is irrational; its decimal never ends and never repeats: ∛997 ≈ 9.99.