Is 815 a deficient number and what is its deficiency?

Is 815 a deficient number?

Here we will explain and calculate if 815 is a deficient number and its deficiency if applicable.

815 is a deficient number if the sum of its proper divisors is less than 815.

The sum of its proper divisors is calculated as follows: 1 + 5 + 163 = 169.

169 is less than 815. Therefore, 815 is a deficient number.

The deficiency of 815 is 815 minus the sum of its proper divisors. Thus, the deficiency of 815 is 815 - 169 = 646

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