Number of the day: 706249

Properties of the number 706249:

706249 = 19 × 37171 is semiprime and squarefree.
706249 has 2 distinct prime factors, 4 divisors, 17 antidivisors and 669060 totatives.
706249 has a triangular digit sum 28 in base 10.
Reversing the decimal digits of 706249 results in a prime.
706249 = 15² + … + 128² is the sum of at least 2 consecutive positive squares in 1 way.
706249 = 353125² - 353124² = 18595² - 18576² is the difference of 2 nonnegative squares in 2 ways.
706249 is the sum of 2 positive triangular numbers.
706249 is the difference of 2 positive pentagonal numbers in 2 ways.
706249 = 28² + 243² + 804² is the sum of 3 positive squares.
706249² is the sum of 3 positive squares.
706249 is a divisor of 241⁹⁰ - 1.
706249 = '706' + '249' is the concatenation of 2 semiprime numbers.
706249 is an emirpimes in (at least) the following bases: 2, 3, 5, 9, 11, 12, 13, 17, 21, 24, 26, 30, 32, 35, 36, 37, 39, 52, 53, 55, 58, 63, 69, 70, 71, 73, 82, 83, 84, 87, 90, 92, 95, 97, and 98.