Is 642 a deficient number and what is its deficiency?

Is 642 a deficient number?

Here we will explain and calculate if 642 is a deficient number and its deficiency if applicable.

642 is a deficient number if the sum of its proper divisors is less than 642.

The sum of its proper divisors is calculated as follows: 1 + 2 + 3 + 6 + 107 + 214 + 321 = 654.

654 is not less than 642. Therefore, 642 is not a deficient number.

The deficiency of 642 is 642 minus the sum of its proper divisors. Thus, the deficiency of 642 is 642 - 654 = No Deficiency

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

Is 643 a deficient number?
Go here for the next number on our list. Is it deficient?