Is 867 a deficient number and what is its deficiency?

Is 867 a deficient number?

Here we will explain and calculate if 867 is a deficient number and its deficiency if applicable.

867 is a deficient number if the sum of its proper divisors is less than 867.

The sum of its proper divisors is calculated as follows: 1 + 3 + 17 + 51 + 289 = 361.

361 is less than 867. Therefore, 867 is a deficient number.

The deficiency of 867 is 867 minus the sum of its proper divisors. Thus, the deficiency of 867 is 867 - 361 = 506

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