• 786 can be written using four 4's:
It is a sphenic number, since it is the product of 3 distinct primes.
786 is an admirable number.
It is a plaindrome in base 12.
It is a nialpdrome in base 11.
786 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
786 is a wasteful number, since it uses less digits than its factorization.
786 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 136.
The square root of 786 is about 28.0356915378. The cubic root of 786 is about 9.2287068042.
Subtracting from 786 its reverse (687), we obtain a palindrome (99).