689 in words
689
six hundred and eighty-nine
689 is written six hundred and eighty-nine.
Ways to write it
- As an ordinal
- six hundred and eighty-ninth
- Roman numeral
- DCLXXXIX
- Expanded form
- 600 + 80 + 9
Place value
| Place | Digit | Value |
|---|---|---|
| hundreds | 6 | 600 |
| tens | 8 | 80 |
| ones | 9 | 9 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 13, 53 and 689 (4 factors)
- First 10 multiples
- 689, 1,378, 2,067, 2,756, 3,445, 4,134, 4,823, 5,512, 6,201, 6,890
- Square
- 689 × 689 = 474,721
- Square root
- ≈ 26.25
- Sum of the digits
- 6 + 8 + 9 = 23
- Rounded to the nearest 10
- 690
- Rounded to the nearest 100
- 700
- Number before
- 688
- Number after
- 690
- In binary
1010110001
Quick check
What number comes just after 689?
Show the answer
690
Is 689 even or odd?
Show the answer
Odd
What is 689 + 10?
Show the answer
699
Practise with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Roman Numerals
Read and write Roman numerals from I to 3,999.Frequently asked questions
How do you write 689 in words?
689 is written "six hundred and eighty-nine".
Is 689 a prime number?
No. 689 is a composite number, because it has more than two factors.
What are the factors of 689?
The factors of 689 are 1, 13, 53 and 689.
How do you write 689 in Roman numerals?
689 in Roman numerals is DCLXXXIX.