Is 670 a deficient number and what is its deficiency?

Is 670 a deficient number?

Here we will explain and calculate if 670 is a deficient number and its deficiency if applicable.

670 is a deficient number if the sum of its proper divisors is less than 670.

The sum of its proper divisors is calculated as follows: 1 + 2 + 5 + 10 + 67 + 134 + 335 = 554.

554 is less than 670. Therefore, 670 is a deficient number.

The deficiency of 670 is 670 minus the sum of its proper divisors. Thus, the deficiency of 670 is 670 - 554 = 116

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