Q: What is the digital root of 21,664,879
A: 7
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.
Split the number up and add each digit together:
If the answer is more than one digit, you would add each digit of the answer together again:
What is the digital root of number 21,664,879?
Answer: 7
| Number | 21,664,877 | 21,664,878 | 21,664,880 | 21,664,881 |
| Digital Root | 5 | 6 | 8 | 9 |