998018 has 8 divisors (see below), whose sum is σ = 1710912. Its totient is φ = 427716.

The previous prime is 998017. The next prime is 998027. The reversal of 998018 is 810899.

It is a happy number.

998018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 998018.

It is not an unprimeable number, because it can be changed into a prime (998017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35630 + ... + 35657.

It is an arithmetic number, because the mean of its divisors is an integer number (213864).

2⁹⁹⁸⁰¹⁸ is an apocalyptic number.

998018 is a deficient number, since it is larger than the sum of its proper divisors (712894).

998018 is a wasteful number, since it uses less digits than its factorization.

998018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71296.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 998018 is about 999.0085084723. The cubic root of 998018 is about 99.9338896372.

The spelling of 998018 in words is "nine hundred ninety-eight thousand, eighteen".