Q: What is the digital root of 66,420,637

 A: 7

Why is 7 the digital root of the number 66,420,637?

The digital root of a number is calculated by splitting the digits of a number and then adding them together. You keep splitting and adding the digits until you reach a single positive number.

How do you calculate the digital root of 66,420,637?


Split the number up and add each digit together:


6 + 6 + 4 + 2 + 0 + 6 + 3 + 7 = 34

If the answer is more than one digit, you would add each digit of the answer together again:

3 + 4 = 7

What is the digital root of number 66,420,637?

Answer: 7


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Digital Root 5689

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