Q: What is the digital root of 15,540,666

 A: 6

Why is 6 the digital root of the number 15,540,666?

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 15,540,666?


Split the number up and add each digit together:


1 + 5 + 5 + 4 + 0 + 6 + 6 + 6 = 33

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

3 + 3 = 6

What is the digital root of number 15,540,666?

Answer: 6


More Examples

Number 15,540,66415,540,66515,540,66715,540,668
Digital Root 4578

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