Is 637 a deficient number and what is its deficiency?

Is 637 a deficient number?

Here we will explain and calculate if 637 is a deficient number and its deficiency if applicable.

637 is a deficient number if the sum of its proper divisors is less than 637.

The sum of its proper divisors is calculated as follows: 1 + 7 + 13 + 49 + 91 = 161.

161 is less than 637. Therefore, 637 is a deficient number.

The deficiency of 637 is 637 minus the sum of its proper divisors. Thus, the deficiency of 637 is 637 - 161 = 476

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