Is 680 a deficient number and what is its deficiency?

Is 680 a deficient number?

Here we will explain and calculate if 680 is a deficient number and its deficiency if applicable.

680 is a deficient number if the sum of its proper divisors is less than 680.

The sum of its proper divisors is calculated as follows: 1 + 2 + 4 + 5 + 8 + 10 + 17 + 20 + 34 + 40 + 68 + 85 + 136 + 170 + 340 = 940.

940 is not less than 680. Therefore, 680 is not a deficient number.

The deficiency of 680 is 680 minus the sum of its proper divisors. Thus, the deficiency of 680 is 680 - 940 = No Deficiency

Deficient Calculator
You can enter another number here to check if it is a deficient number:

Is 681 a deficient number?
Go here for the next number on our list. Is it deficient?