98558 has 4 divisors (see below), whose sum is σ = 147840. Its totient is φ = 49278.

The previous prime is 98543. The next prime is 98561. The reversal of 98558 is 85589.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85589 = 7 ⋅12227.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

98558 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24638 + ... + 24641.

It is an arithmetic number, because the mean of its divisors is an integer number (36960).

2⁹⁸⁵⁵⁸ is an apocalyptic number.

98558 is a deficient number, since it is larger than the sum of its proper divisors (49282).

98558 is a wasteful number, since it uses less digits than its factorization.

98558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49281.

The product of its digits is 14400, while the sum is 35.

The square root of 98558 is about 313.9394846145. The cubic root of 98558 is about 46.1917015636.

It can be divided in two parts, 98 and 558, that added together give a palindrome (656).

The spelling of 98558 in words is "ninety-eight thousand, five hundred fifty-eight".