Q: What is the negative version of the number 644,635,606?
A: -644,635,606
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:
| 644,635,604 | 644,635,605 | 644,635,607 | 644,635,608 |
| -644,635,604 | -644,635,605 | -644,635,607 | -644,635,608 |