998546874 has 64 divisors (see below), whose sum is σ = 2184706944. Its totient is φ = 302432256.

The previous prime is 998546869. The next prime is 998546917. The reversal of 998546874 is 478645899.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1700809 + ... + 1701395.

It is an arithmetic number, because the mean of its divisors is an integer number (34136046).

Almost surely, 2^998546874 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998546874, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1092353472).

998546874 is an abundant number, since it is smaller than the sum of its proper divisors (1186160070).

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

998546874 is a wasteful number, since it uses less digits than its factorization.

998546874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911.

The product of its digits is 17418240, while the sum is 60.

The square root of 998546874 is about 31599.7923094441. The cubic root of 998546874 is about 999.5153898576.

The spelling of 998546874 in words is "nine hundred ninety-eight million, five hundred forty-six thousand, eight hundred seventy-four".