Q: What is the negative version of the number 686,671,649?
A: -686,671,649
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:
| 686,671,647 | 686,671,648 | 686,671,650 | 686,671,651 |
| -686,671,647 | -686,671,648 | -686,671,650 | -686,671,651 |