Number of the day: 80997

Properties of the number 80997:

80997 = 3 × 7² × 19 × 29 is the 73071^th composite number and is not squarefree.
80997 has 4 distinct prime factors, 24 divisors, 35 antidivisors and 42336 totatives.
80997 has a semiprime digit sum 33 in base 10.
80997 is the difference of 2 nonnegative squares in 12 ways.
80997 is the sum of 2 positive triangular numbers.
80997 is the difference of 2 positive pentagonal numbers in 4 ways.
80997 = 17² + 82² + 272² is the sum of 3 positive squares.
80997² = 55860² + 58653² is the sum of 2 positive squares in 1 way.
80997² is the sum of 3 positive squares.
80997 is a proper divisor of 521⁶ - 1.
80997 = '809' + '97' is the concatenation of 2 prime numbers.
80997 in base 34 = 2229 and consists of only the digits '2' and '9'.