Rounded off to the nearest whole number it is 92
15499
15549.99...
If you're talking about whole numbers, then it's 6,049 .If you're talking about any number, including decimals and fractions, then there's no "greatest possible" one.
104999, rounded to the nearest 70000 is 70000 so the largest integer is 104999. The largest number is 104999.999...
Rounded off to the nearest whole number it is 92
Any number can be rounded to the neaest million.
7499
349
38249
3499
5499999
1549
5499
9.74999999999999999999.....
15499
9.1449