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

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 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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