Is 865 a deficient number and what is its deficiency?

Is 865 a deficient number?

Here we will explain and calculate if 865 is a deficient number and its deficiency if applicable.

865 is a deficient number if the sum of its proper divisors is less than 865.

The sum of its proper divisors is calculated as follows: 1 + 5 + 173 = 179.

179 is less than 865. Therefore, 865 is a deficient number.

The deficiency of 865 is 865 minus the sum of its proper divisors. Thus, the deficiency of 865 is 865 - 179 = 686

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