998868 has 48 divisors (see below), whose sum is σ = 2649920. Its totient is φ = 290304.

The previous prime is 998861. The next prime is 998897. The reversal of 998868 is 868899.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 998868.

It is not an unprimeable number, because it can be changed into a prime (998861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2796 + ... + 3132.

2⁹⁹⁸⁸⁶⁸ 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 998868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1324960).

998868 is an abundant number, since it is smaller than the sum of its proper divisors (1651052).

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

998868 is a wasteful number, since it uses less digits than its factorization.

998868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376 (or 374 counting only the distinct ones).

The product of its digits is 248832, while the sum is 48.

The square root of 998868 is about 999.4338397313. The cubic root of 998868 is about 99.9622524197.

The spelling of 998868 in words is "nine hundred ninety-eight thousand, eight hundred sixty-eight".