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63 in words

63

sixty-three

63 is written sixty-three.

Ways to write it

As an ordinal: sixty-third
Roman numeral: LXIII
Expanded form: 60 + 3

Place value

Place	Digit	Value
tens	6	60
ones	3	3

Number facts

Even or odd: Odd
Prime or composite: Composite
Factors: 1, 3, 7, 9, 21 and 63 (6 factors)
First 10 multiples: 63, 126, 189, 252, 315, 378, 441, 504, 567, 630
Square: 63 × 63 = 3,969
Square root: ≈ 7.94
Sum of the digits: 6 + 3 = 9
Rounded to the nearest 10: 60
Number before: 62
Number after: 64
In binary: 111111

Quick check

What number comes just after 63?
Show the answer
64
Is 63 even or odd?
Show the answer
Odd
What is 63 + 10?
Show the answer
73

Practise with a game

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Place Value Quest

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Frequently asked questions

How do you write 63 in words?

63 is written "sixty-three".

Is 63 a prime number?

No. 63 is a composite number, because it has more than two factors.

What are the factors of 63?

The factors of 63 are 1, 3, 7, 9, 21 and 63.

How do you write 63 in Roman numerals?

63 in Roman numerals is LXIII.