Q: What is the negative version of the number 644,633,761?
A: -644,633,761
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:
| 644,633,759 | 644,633,760 | 644,633,762 | 644,633,763 |
| -644,633,759 | -644,633,760 | -644,633,762 | -644,633,763 |