Is 649 a deficient number and what is its deficiency?

Is 649 a deficient number?

Here we will explain and calculate if 649 is a deficient number and its deficiency if applicable.

649 is a deficient number if the sum of its proper divisors is less than 649.

The sum of its proper divisors is calculated as follows: 1 + 11 + 59 = 71.

71 is less than 649. Therefore, 649 is a deficient number.

The deficiency of 649 is 649 minus the sum of its proper divisors. Thus, the deficiency of 649 is 649 - 71 = 578

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