The greatest 6-digit number divisible by 156 is 999960.
To find this, we start with the largest 6-digit number, which is 999,999. Then, we divide this number by 156 to see how close it is to being divisible by 156.
999999 / 156 = 6410.25
This means that 156 goes into 999,999 approximately 6410 times. To find the largest 6-digit number divisible by 156, we multiply 156 by 6410:
156 * 6410 = 999960
Therefore, 999960 is the largest 6-digit number divisible by 156.