Is 621 a deficient number and what is its deficiency?

Is 621 a deficient number?

Here we will explain and calculate if 621 is a deficient number and its deficiency if applicable.

621 is a deficient number if the sum of its proper divisors is less than 621.

The sum of its proper divisors is calculated as follows: 1 + 3 + 9 + 23 + 27 + 69 + 207 = 339.

339 is less than 621. Therefore, 621 is a deficient number.

The deficiency of 621 is 621 minus the sum of its proper divisors. Thus, the deficiency of 621 is 621 - 339 = 282

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