وَٱلْمَلَكُ عَلَىٰٓ أَرْجَآئِهَا ۚ وَيَحْمِلُ عَرْشَ رَبِّكَ فَوْقَهُمْ يَوْمَئِذٍ ثَمَـٰنِيَةٌ
And the angels are at its edges. And there will bear the Throne of your Lord above them, that Day, eight [of them].
The Reality
وَٱلْمَلَكُ عَلَىٰٓ أَرْجَآئِهَا ۚ وَيَحْمِلُ عَرْشَ رَبِّكَ فَوْقَهُمْ يَوْمَئِذٍ ثَمَـٰنِيَةٌ
And the angels are at its edges. And there will bear the Throne of your Lord above them, that Day, eight [of them].
Nearby ayahs help place verse 69:17 in sequence and meaning.
فَيَوْمَئِذٍ وَقَعَتِ ٱلْوَاقِعَةُ
Then on that Day, the Resurrection will occur,
وَٱنشَقَّتِ ٱلسَّمَآءُ فَهِىَ يَوْمَئِذٍ وَاهِيَةٌ
And the heaven will split [open], for that Day it is infirm.
يَوْمَئِذٍ تُعْرَضُونَ لَا تَخْفَىٰ مِنكُمْ خَافِيَةٌ
That Day, you will be exhibited [for judgement]; not hidden among you is anything concealed.
فَأَمَّا مَنْ أُوتِىَ كِتَـٰبَهُۥ بِيَمِينِهِۦ فَيَقُولُ هَآؤُمُ ٱقْرَءُوا۟ كِتَـٰبِيَهْ
So as for he who is given his record in his right hand, he will say, "Here, read my record!