Is 771 a deficient number and what is its deficiency?

Is 771 a deficient number?

Here we will explain and calculate if 771 is a deficient number and its deficiency if applicable.

771 is a deficient number if the sum of its proper divisors is less than 771.

The sum of its proper divisors is calculated as follows: 1 + 3 + 257 = 261.

261 is less than 771. Therefore, 771 is a deficient number.

The deficiency of 771 is 771 minus the sum of its proper divisors. Thus, the deficiency of 771 is 771 - 261 = 510

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