6558 has 8 divisors (see below), whose sum is σ = 13128. Its totient is φ = 2184.

The previous prime is 6553. The next prime is 6563. The reversal of 6558 is 8556.

It is an interprime number because it is at equal distance from previous prime (6553) and next prime (6563).

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.

It is not an unprimeable number, because it can be changed into a prime (6551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 541 + ... + 552.

It is an arithmetic number, because the mean of its divisors is an integer number (1641).

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.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6564).

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 product of its digits is 1200, while the sum is 24.

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".