6,400 in words
6,400
six thousand four hundred
6,400 is written six thousand four hundred.
Ways to write it
- As an ordinal
- six thousand four hundredth
- Expanded form
- 6,000 + 400
Place value
| Place | Digit | Value |
|---|---|---|
| thousands | 6 | 6,000 |
| hundreds | 4 | 400 |
| tens | 0 | 0 |
| ones | 0 | 0 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 640, 800, 1,280, 1,600, 3,200 and 6,400 (27 factors)
- First 10 multiples
- 6,400, 12,800, 19,200, 25,600, 32,000, 38,400, 44,800, 51,200, 57,600, 64,000
- Square
- 6,400 × 6,400 = 40,960,000
- Square root
- 80
- Sum of the digits
- 6 + 4 + 0 + 0 = 10
- Rounded to the nearest 10
- 6,400
- Rounded to the nearest 100
- 6,400
- Rounded to the nearest 1000
- 6,000
- Number before
- 6,399
- Number after
- 6,401
- In binary
1100100000000
Quick check
What number comes just after 6,400?
Show the answer
6,401
Is 6,400 even or odd?
Show the answer
Even
What is 6,400 + 10?
Show the answer
6,410
Practice with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Number Patterns
Find the missing number in a sequence.Frequently asked questions
How do you write 6,400 in words?
6,400 is written "six thousand four hundred".
Is 6,400 a prime number?
No. 6,400 is a composite number, because it has more than two factors.
What are the factors of 6,400?
The factors of 6,400 are 1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 640, 800, 1,280, 1,600, 3,200 and 6,400.