Q: What is the negative version of the number 686,840,809?
A: -686,840,809
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:
| 686,840,807 | 686,840,808 | 686,840,810 | 686,840,811 |
| -686,840,807 | -686,840,808 | -686,840,810 | -686,840,811 |