Q: What is the negative version of the number 660,506,639?
A: -660,506,639
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:
| 660,506,637 | 660,506,638 | 660,506,640 | 660,506,641 |
| -660,506,637 | -660,506,638 | -660,506,640 | -660,506,641 |