Is 1065 a deficient number and what is its deficiency?

Is 1065 a deficient number?

Here we will explain and calculate if 1065 is a deficient number and its deficiency if applicable.

1065 is a deficient number if the sum of its proper divisors is less than 1065.

The sum of its proper divisors is calculated as follows: 1 + 3 + 5 + 15 + 71 + 213 + 355 = 663.

663 is less than 1065. Therefore, 1065 is a deficient number.

The deficiency of 1065 is 1065 minus the sum of its proper divisors. Thus, the deficiency of 1065 is 1065 - 663 = 402

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