998574 has 8 divisors (see below), whose sum is σ = 1997160. Its totient is φ = 332856.

The previous prime is 998561. The next prime is 998617. The reversal of 998574 is 475899.

It is a sphenic number, since it is the product of 3 distinct primes.

998574 is an admirable number.

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 998574.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 83209 + ... + 83220.

It is an arithmetic number, because the mean of its divisors is an integer number (249645).

2⁹⁹⁸⁵⁷⁴ is an apocalyptic number.

998574 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.

998574 is a wasteful number, since it uses less digits than its factorization.

998574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166434.

The product of its digits is 90720, while the sum is 42.

The square root of 998574 is about 999.2867456341. The cubic root of 998574 is about 99.9524440546.

The spelling of 998574 in words is "nine hundred ninety-eight thousand, five hundred seventy-four".