998205 has 16 divisors (see below), whose sum is σ = 1720320. Its totient is φ = 491328.

The previous prime is 998201. The next prime is 998213. The reversal of 998205 is 502899.

998205 = T₂₆₄ + T₂₆₅ + ... + T₂₈₉.

It is not a de Polignac number, because 998205 - 2² = 998201 is a prime.

It is a Curzon number.

998205 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2365 + ... + 2754.

It is an arithmetic number, because the mean of its divisors is an integer number (107520).

2⁹⁹⁸²⁰⁵ is an apocalyptic number.

It is an amenable number.

998205 is a deficient number, since it is larger than the sum of its proper divisors (722115).

998205 is a wasteful number, since it uses less digits than its factorization.

998205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5140.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 998205 is about 999.1020968850. The cubic root of 998205 is about 99.9401308306.

The spelling of 998205 in words is "nine hundred ninety-eight thousand, two hundred five".