Sum of Digits of 678
ANSWER : 21
The sum of the digits in the number 678 is: 6 + 7 + 8 = 21
How to Calculate the Digit Sum of 678?
To find the sum of digits of a number, simply break it into individual digits and add them. For 678:
6 + 7 + 8 = 21
The digits of 678 are: 6, 7, 8.
Their sum is: 21
Step-by-Step Digit Sum of 678
We split the number 678 into its individual digits: 6 + 7 + 8 = 21
Digit Positions in 678
| Position | Digit |
|---|---|
| 1 | 6 |
| 2 | 7 |
| 3 | 8 |
Length of 678
The number 678 has 3 digits.
Is 21 a Prime Number?
No, 21 is not a prime number.
Digit Sums in Other Bases
- Binary: 1010100110 → 5
- Octal: 1246 → 13
- Hexadecimal: 2A6 → 18