998004 has 36 divisors (see below), whose sum is σ = 2685984. Its totient is φ = 282528.

The previous prime is 997991. The next prime is 998009. The reversal of 998004 is 400899.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9102 + ... + 9210.

2⁹⁹⁸⁰⁰⁴ 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 998004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1342992).

998004 is an abundant number, since it is smaller than the sum of its proper divisors (1687980).

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

998004 is a wasteful number, since it uses less digits than its factorization.

998004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 998004 is about 999.0015015004. The cubic root of 998004 is about 99.9334223507.

The spelling of 998004 in words is "nine hundred ninety-eight thousand, four".