Q: How Many Digits in the Number 686,478,778?

 A: The number 686,478,778 has 9 digits.

How does 686,478,778 have 9 digits?

You simply count the number of digits from the first number to the last. Like this:


686478778
Digit # 123456789

What are the number of digits of the numbers near 686,478,778?

686,478,776686,478,777686,478,779686,478,780
9999

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