It is a sphenic number, since it is the product of 3 distinct primes.
6558 is an admirable number.
It is a plaindrome in base 14 and base 16.
It is a nialpdrome in base 3 and base 9.
It is a congruent number.
6558 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.
6558 is a wasteful number, since it uses less digits than its factorization.
6558 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1098.
The square root of 6558 is about 80.9814793641. The cubic root of 6558 is about 18.7179006339.
The spelling of 6558 in words is "six thousand, five hundred fifty-eight".