17 in Words
How do you write 17 in words?
The number 17 is written seventeen in words. As an ordinal it is seventeenth, and on a check you would write Seventeen and 00/100.
Last updated 19 June 2026
Other ways to write it
| Cardinal | seventeen |
|---|---|
| Ordinal | seventeenth |
| Currency | seventeen dollars |
| Check format | Seventeen and 00/100 |
How number-to-words spelling works
A cardinal number names a quantity (seventeen), while an ordinal names a position (seventeenth). English hyphenates compound numbers from twenty-one to ninety-nine and groups digits into thousands, millions, and billions.
For house-style rules on spelling out numbers, see the Chicago Manual of Style, or read our guide to spelling numbers in words.
Facts about 17
- 17 is an odd number.
- It is a prime number.
- Digit sum: 8.
- Roman numerals: XVII.
- Binary: 10001.
- Hexadecimal: 11.
| Digit | Place |
|---|---|
| 1 | tens |
| 7 | ones |
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Frequently asked questions
How do you write 17 in words?
17 in words is "seventeen".
How do you spell 17?
17 is spelled "seventeen".
How do you write 17 on a check?
On a check, write "Seventeen and 00/100".