Bonus number of the day: 663168191

Properties of the number 663168191:

663168191 = 7 × 19² × 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 = 331584096² - 331584095² = 47369160² - 47369153² = 17451804² - 17451785² = 2493180² - 2493047² = 918696² - 918335² = 132480² - 129953² is the difference of 2 nonnegative squares in 6 ways.
663168191 is not the sum of 3 positive squares.
663168191² is the sum of 2 positive squares in 1 way.