687 in words
687
six hundred and eighty-seven
687 is written six hundred and eighty-seven.
Ways to write it
- As an ordinal
- six hundred and eighty-seventh
- Roman numeral
- DCLXXXVII
- Expanded form
- 600 + 80 + 7
Place value
| Place | Digit | Value |
|---|---|---|
| hundreds | 6 | 600 |
| tens | 8 | 80 |
| ones | 7 | 7 |
Number facts
- Even or odd
- Odd
- Prime or composite
- Composite
- Factors
- 1, 3, 229 and 687 (4 factors)
- First 10 multiples
- 687, 1,374, 2,061, 2,748, 3,435, 4,122, 4,809, 5,496, 6,183, 6,870
- Square
- 687 × 687 = 471,969
- Square root
- ≈ 26.21
- Sum of the digits
- 6 + 8 + 7 = 21
- Rounded to the nearest 10
- 690
- Rounded to the nearest 100
- 700
- Number before
- 686
- Number after
- 688
- In binary
1010101111
Quick check
What number comes just after 687?
Show the answer
688
Is 687 even or odd?
Show the answer
Odd
What is 687 + 10?
Show the answer
697
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 687 in words?
687 is written "six hundred and eighty-seven".
Is 687 a prime number?
No. 687 is a composite number, because it has more than two factors.
What are the factors of 687?
The factors of 687 are 1, 3, 229 and 687.
How do you write 687 in Roman numerals?
687 in Roman numerals is DCLXXXVII.