998573 has 8 divisors (see below), whose sum is σ = 1034208. Its totient is φ = 963664.

The previous prime is 998561. The next prime is 998617. The reversal of 998573 is 375899.

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

It is a cyclic number.

It is not a de Polignac number, because 998573 - 2¹⁸ = 736429 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 998573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998513) 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 7 ways as a sum of consecutive naturals, for example, 4286 + ... + 4512.

It is an arithmetic number, because the mean of its divisors is an integer number (129276).

2⁹⁹⁸⁵⁷³ is an apocalyptic number.

It is an amenable number.

998573 is a deficient number, since it is larger than the sum of its proper divisors (35635).

998573 is a wasteful number, since it uses less digits than its factorization.

998573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363.

The product of its digits is 68040, while the sum is 41.

The square root of 998573 is about 999.2862452771. The cubic root of 998573 is about 99.9524106895.

The spelling of 998573 in words is "nine hundred ninety-eight thousand, five hundred seventy-three".