Write the number 0.000877 in words?

Eight hundreds seventy seven millionths.

Step-by-step explanation:

1. You have the folllowing number given in the problem above: 0.000877

2. As you can see, the whole part of  0.000877 is zero, therefore, to write it in words you must write the place value of the last digit on the decimal part.

3. In this case, the last digit is in the millionths place. Then, it is: eight hundreds seventy seven millionths.