Number of the day: 68814649820

Properties of the number 68814649820:

68814649820 = 2² × 5 × 7 × 71 × 6923003 is composite and not squarefree.
68814649820 has 5 distinct prime factors, 48 divisors, 47 antidivisors and 23261286720 totatives.
68814649820 has an oblong digit sum 56 in base 10.
68814649820 = 17203662456² - 17203662454² = 3440732496² - 3440732486² = 2457666072² - 2457666058² = 491533248² - 491533178² = 242305176² - 242305034² = 48461376² - 48460666² = 34615512² - 34614518² = 6925488² - 6920518² is the difference of 2 nonnegative squares in 8 ways.
68814649820 is the difference of 2 positive pentagonal numbers in 8 ways.
68814649820 is not the sum of 3 positive squares.
68814649820² = 41288789892² + 55051719856² is the sum of 2 positive squares in 1 way.
68814649820² is the sum of 3 positive squares.
68814649820 is a proper divisor of 1063⁷¹⁵⁸²⁰ - 1.