Solution: Let this number be 10x+6.

4( 10x+6)=600000+x

40x+24=600000+x

40x-x=600000-24

39x=599976

x= 15384

So this number is10x+6 =10x15384+6 =153846.

A: This number is 153846.

I hope my answer is helpful to you.