Who am I?    n°2

I am a number with 6 digits.
All my digits are even.
My 'tens of thousands' digit is is the difference between my two neighbours.
My 'units' digit is one quarter of my 'hundreds' digit.
My 'thousands' digit is 8.
My 'hundreds' digit is the same as my 'thousands' digit.
My first digit is 6.
My 'tens' digit is different to all the others but not equal to 0.

Who am I?

I am the number


If you get stuck, use pen and paper to help you figure it out!