Number of the day: 80866668

Properties of the number 80866668:

80866668 = 2² × 3 × 6738889 is the 76149589^th composite number and is not squarefree.
80866668 has 3 distinct prime factors, 12 divisors, 11 antidivisors and 26955552 totatives.
80866668 = 20216668² - 20216666² = 6738892² - 6738886² is the difference of 2 nonnegative squares in 2 ways.
80866668 is the sum of 2 positive triangular numbers.
80866668 is the difference of 2 positive pentagonal numbers in 1 way.
80866668 = 122² + 178² + 8990² is the sum of 3 positive squares.
80866668² = 25781268² + 76646880² is the sum of 2 positive squares in 1 way.
80866668² is the sum of 3 positive squares.
80866668 is a proper divisor of 311⁴³¹⁹⁸ - 1.