Is 678 a deficient number and what is its deficiency?

Is 678 a deficient number?

Here we will explain and calculate if 678 is a deficient number and its deficiency if applicable.

678 is a deficient number if the sum of its proper divisors is less than 678.

The sum of its proper divisors is calculated as follows: 1 + 2 + 3 + 6 + 113 + 226 + 339 = 690.

690 is not less than 678. Therefore, 678 is not a deficient number.

The deficiency of 678 is 678 minus the sum of its proper divisors. Thus, the deficiency of 678 is 678 - 690 = No Deficiency

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