Q: What is the digital root of 66,426,217

 A: 7

Why is 7 the digital root of the number 66,426,217?

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 66,426,217?


Split the number up and add each digit together:


6 + 6 + 4 + 2 + 6 + 2 + 1 + 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 66,426,217?

Answer: 7


More Examples

Number 66,426,21566,426,21666,426,21866,426,219
Digital Root 5689

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