### Properties of the number 663168191:

663168191 = 7 × 19^{2}× 262433 is composite.

663168191 has 3 distinct prime factors, 12 divisors and 23 antidivisors.

663168191 has a prime digit sum 41 in base 10.

663168191 = 331584096

^{2}- 331584095

^{2}= 47369160

^{2}- 47369153

^{2}= 17451804

^{2}- 17451785

^{2}= 2493180

^{2}- 2493047

^{2}= 918696

^{2}- 918335

^{2}= 132480

^{2}- 129953

^{2}is the difference of 2 nonnegative squares in 6 ways.

663168191 is not the sum of 3 positive squares.

663168191

^{2}is the sum of 2 positive squares in 1 way.

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