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64 in words

64

sixty-four

64 is written sixty-four.

Ways to write it

As an ordinal: sixty-fourth
Roman numeral: LXIV
Expanded form: 60 + 4

Place value

Place	Digit	Value
tens	6	60
ones	4	4

Number facts

Even or odd: Even
Prime or composite: Composite
Factors: 1, 2, 4, 8, 16, 32 and 64 (7 factors)
First 10 multiples: 64, 128, 192, 256, 320, 384, 448, 512, 576, 640
Square: 64 × 64 = 4,096
Square root: 8
Cube root: 4
Sum of the digits: 6 + 4 = 10
Rounded to the nearest 10: 60
Number before: 63
Number after: 65
In binary: 1000000

Quick check

What number comes just after 64?
Show the answer
65
Is 64 even or odd?
Show the answer
Even
What is 64 + 10?
Show the answer
74

Practice with a game

Count with Me

Count pictures up to 5, 10 or 20 and compare groups.

Place Value Quest

Ones, tens, hundreds and thousands.

Times Tables Challenge

Practice any times table from 2× to 12×.

Frequently asked questions

How do you write 64 in words?

64 is written "sixty-four".

Is 64 a prime number?

No. 64 is a composite number, because it has more than two factors.

What are the factors of 64?

The factors of 64 are 1, 2, 4, 8, 16, 32 and 64.

How do you write 64 in Roman numerals?

64 in Roman numerals is LXIV.