998045 has 16 divisors (see below), whose sum is σ = 1271808. Its totient is φ = 750720.

The previous prime is 998029. The next prime is 998069. The reversal of 998045 is 540899.

It is not a de Polignac number, because 998045 - 2⁴ = 998029 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 997996 and 998014.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 7217 + ... + 7353.

It is an arithmetic number, because the mean of its divisors is an integer number (79488).

2⁹⁹⁸⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

998045 is a deficient number, since it is larger than the sum of its proper divisors (273763).

998045 is a wasteful number, since it uses less digits than its factorization.

998045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220.

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

The square root of 998045 is about 999.0220217793. The cubic root of 998045 is about 99.9347908202.

The spelling of 998045 in words is "nine hundred ninety-eight thousand, forty-five".