Q: What is the negative version of the number 640,633,637?
A: -640,633,637
Negative numbers are usually written with - in front of them. They represent a number that is less than zero.
Here are more examples of negative numbers in sequence:
| 640,633,635 | 640,633,636 | 640,633,638 | 640,633,639 |
| -640,633,635 | -640,633,636 | -640,633,638 | -640,633,639 |