Is 1647 a deficient number and what is its deficiency?

Is 1647 a deficient number?

Here we will explain and calculate if 1647 is a deficient number and its deficiency if applicable.

1647 is a deficient number if the sum of its proper divisors is less than 1647.

The sum of its proper divisors is calculated as follows: 1 + 3 + 9 + 27 + 61 + 183 + 549 = 833.

833 is less than 1647. Therefore, 1647 is a deficient number.

The deficiency of 1647 is 1647 minus the sum of its proper divisors. Thus, the deficiency of 1647 is 1647 - 833 = 814

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