yes
23.6 degrees
No, planets are not bad because they are tilted. The Earth's tilt for example gives us the seasons. Uranus is tilted on its side; Venus is upside-down.
venus
They all do except for Mercury and Jupiter. Venus rotates backwards, so it is considered to tilt at about 177 degrees (to be upside down.) If you do not consider being upside down to be tilted at 177 degrees, then Venus would be tilted at 3 degrees, which is less than Earth.
The axis of Venus is tilted 177.3 degrees from the plane of the ecliptic. This means that Venus rotates clockwise, instead of counter-clockwise, as viewed from the direction of Polaris. Its period of rotation is -243 days, making it the slowest rotating planet in the Solar System.
There is more than one planet that has not tilt. The planets are Mercury, Venus, and Jupiter. The planet's also do not have seasons.
Earth and Mars. Venus has only a small tilt and Mercury almost no tilt.
Uranus and Venus are the two planets in our solar system that rotate on a highly tilted axis. Uranus has an extreme tilt of about 98 degrees, causing it to essentially roll on its side as it orbits the Sun. Venus, on the other hand, has a tilt of about 177 degrees, which means it rotates in the opposite direction to its orbit around the Sun.
All planets have tilted axes. But the axis of Uranus is tilted almost by 90 degrees with the plane of its orbit making it look like it is rotating vertically. See related link for a pictorial representation
This is a bit tricky. I would say the answer is Uranus, which is tipped at about 98 degrees. However you may read that Venus is tilted at about 177 degrees. Sometimes the tilt of Venus is given as just three degrees. This is really to do with the retrograde rotation of Venus and how its north pole is defined. (177 + 3 = 180 degrees, of course.) So the answer is Uranus or Venus.
Venus and Uranus are the two planets that spin backwards compared to the majority of the planets in our solar system. Venus rotates in the opposite direction to its orbit around the Sun, while Uranus is tilted on its side, causing its rotational axis to be nearly parallel to its orbit.
In comparing the angles between the planets' rotational axes and their orbital planes, Jupiter deviates from the perpendicular by only 3.13°. Only two planets have less tilt: Mercury and Venus (Venus rotates backwards; it's called a retrograde rotation).