Hey guys, in this blog we will see a **Python Program to Check Armstrong Numbers**.

An Armstrong number is simply a number that equals the sum of the cube of all its digits. For example 371, it is an Armstrong number, and the following is the proof.

**371 = (3) ^{3} + (7)^{3} + (1)^{3}**

371 = 27 + 343 + 1

371 = 371

## Code

# Python program to check if the number is an Armstrong number or not # take input from the user num = int(input("Enter a number: ")) # initialize sum sum = 0 # find the sum of the cube of each digit temp = num while temp > 0: digit = temp % 10 sum += digit ** 3 temp //= 10 # display the result if num == sum: print(num,"is an Armstrong number") else: print(num,"is not an Armstrong number")

**Output**

Enter a number: 231 231 is not an Armstrong number

Enter a number: 407 407 is an Armstrong number

Enter a number: 371 371 is an Armstrong number

Here we are** checking the same condition we defined above about Armstrong Numbers**.

In our while loop,

- We are extracting digit by digit
- Cubing it
- Removing the extracted digit from our num
- And adding the cube to our sum

**Suppose num = 371So temp is also 371.digit = temp%10 = 1temp = temp//10 = 37**

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