For a six-digit number, the number in the ones place is 7, the number in the tens place is 9, and the sum of any three adjacent numbers is 24. What is this number?
一个六位数，个位上的数字是7，十位上的数字是9，任意相邻三个数字之和是24，这个数是多少？
<result>897_897</result>