998568 has 80 divisors (see below), whose sum is σ = 2962080. Its totient is φ = 313632.

The previous prime is 998561. The next prime is 998617. The reversal of 998568 is 865899.

Its product of digits (155520) is a multiple of the sum of its prime factors (108).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 998568.

It is not an unprimeable number, because it can be changed into a prime (998561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14871 + ... + 14937.

It is an arithmetic number, because the mean of its divisors is an integer number (37026).

2⁹⁹⁸⁵⁶⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1481040).

998568 is an abundant number, since it is smaller than the sum of its proper divisors (1963512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

998568 is a wasteful number, since it uses less digits than its factorization.

998568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108 (or 95 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 998568 is about 999.2837434883. The cubic root of 998568 is about 99.9522438638.

The spelling of 998568 in words is "nine hundred ninety-eight thousand, five hundred sixty-eight".