268 (two hundred [and] sixty-eight) is the natural number following 267 and preceding 269.
In mathematics
- 268 is an even composite number with two prime factors,[1] but one of the prime factors is repeated: 268 = 67*2*2.
- 268 is the smallest number whose product of digits is 6 times the sum of its digits.
- 268 is untouchable which means that it is not the sum of the proper divisors of any number[2]
- 268 is the sum of the consecutive primes 131 and 137.[3]
References
- ^ "Facts about the integer". mathworld.wolfram.com.
- ^ "Untouchable numbers". mathworld.worfram.com.
- ^ "Twin prime numbers". mathworld.wolfram.com.