Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Rank | Wrestler | No. of reigns | Combined days |
| --- | --- | --- | --- |
| 1 | Lou Thesz | 3 | 3,749 |
| 2 | Ric Flair | 8 | 3,103 |
| 3 | Harley Race | 7 | 1,799 |
| 4 | Dory Funk, Jr. | 1 | 1,563 |
| 5 | Dan Severn | 2 | 1,559 |
| 6 | Gene Kiniski | 1 | 1,131 |
| 7 | Adam Pearce | 5 | 1,078 |
| 8 | Jeff Jarrett | 6 | 1,006 |
| 9 | Pat O'Connor | 1 | 903 |
| 10 | Jack Brisco | 2 | 866 |
| 11 | Orville Brown | 1 | 692 |
| 12 | Buddy Rogers | 1 | 573 |
| 13 | Blue Demon, Jr. | 1 | 505 |
| 14 | Naoya Ogawa | 2 | 469 |
| 15 | Terry Funk | 1 | 424 |
| 16 | Dick Hutton | 1 | 421 |
| 17 | Rob Conway | 1 | 294 |
| 18 | Christian Cage | 2 | 245 |
| 19 | Whipper Billy Watson | 1 | 239 |
| 20 | Sting | 2 | 216 |
| 21 | A.J. Styles | 3 | 196 |
| 22 | Mike Rapada | 2 | 176 |
| 23 | Steve Corino | 1 | 175 |
| 24 | Colt Cabana | 2 | 152 |
| 25 | Barry Windham | 1 | 147 |
| 26 | Masahiro Chono | 1 | 145 |
| 27 | Kahagas | 1 | 134 |
| 28 | Ron Killings | 2 | 119 |
| 29 | Dusty Rhodes | 3 | 107 |
| 30 | Chris Candido | 1 | 97 |
| 31 | Raven | 1 | 88 |
| 32 | Satoshi Kojima | 1 | 159+ |
| 33 | Shinya Hashimoto | 1 | 84 |
| 34 | The Sheik | 1 | 79 |
| 35 | Ricky Steamboat | 1 | 76 |
| 36 | Ron Garvin | 1 | 62 |
| 37 | Abyss | 1 | 56 |
| 39 | Ken Shamrock | 1 | 49 |
| 39 | Brent Albright | 1 | 49 |
| 40 | The Great Muta | 1 | 48 |
| 41 | Sabu | 1 | 38 |
| 42 | Giant Baba | 3 | 19 |
| 43 | Kerry Von Erich | 1 | 18 |
| 44 | Gary Steele | 1 | 7 |
| 45 | Tommy Rich | 1 | 4 |
| 46 | Rhino | 1 | 2 |
| 47 | Shane Douglas | 1 | <1 |
Question:
how long did orville brown remain nwa world heavyweight champion?
Answer:
692 days