998504 has 16 divisors (see below), whose sum is σ = 2016420. Its totient is φ = 460800.

The previous prime is 998497. The next prime is 998513. The reversal of 998504 is 405899.

It can be written as a sum of positive squares in 2 ways, for example, as 996004 + 2500 = 998^2 + 50^2 .

It is a nialpdrome in base 11.

It is an unprimeable number.

998504 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 4697 + ... + 4904.

2⁹⁹⁸⁵⁰⁴ is an apocalyptic number.

It is an amenable number.

998504 is an abundant number, since it is smaller than the sum of its proper divisors (1017916).

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

998504 is a wasteful number, since it uses less digits than its factorization.

998504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9620 (or 9616 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 998504 is about 999.2517200385. The cubic root of 998504 is about 99.9501084458.

The spelling of 998504 in words is "nine hundred ninety-eight thousand, five hundred four".