Q: What is the negative version of the number 66,621,640?
A: -66,621,640
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:
| 66,621,638 | 66,621,639 | 66,621,641 | 66,621,642 |
| -66,621,638 | -66,621,639 | -66,621,641 | -66,621,642 |