Q: What is the digital root of 40,662,657

 A: 9

Why is 9 the digital root of the number 40,662,657?

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 40,662,657?


Split the number up and add each digit together:


4 + 0 + 6 + 6 + 2 + 6 + 5 + 7 = 36

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

3 + 6 = 9

What is the digital root of number 40,662,657?

Answer: 9


More Examples

Number 40,662,65540,662,65640,662,65840,662,659
Digital Root 7812

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