Q: What is the negative version of the number 640,061,407?
A: -640,061,407
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:
| 640,061,405 | 640,061,406 | 640,061,408 | 640,061,409 |
| -640,061,405 | -640,061,406 | -640,061,408 | -640,061,409 |