998270 has 32 divisors (see below), whose sum is σ = 2213568. Its totient is φ = 315648.

The previous prime is 998243. The next prime is 998273. The reversal of 998270 is 72899.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 998270.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998273) by changing a digit.

998270 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 362 + ... + 1458.

It is an arithmetic number, because the mean of its divisors is an integer number (69174).

2⁹⁹⁸²⁷⁰ is an apocalyptic number.

998270 is an abundant number, since it is smaller than the sum of its proper divisors (1215298).

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

998270 is a wasteful number, since it uses less digits than its factorization.

998270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 998270 is about 999.1346255635. The cubic root of 998270 is about 99.9423000469.

The spelling of 998270 in words is "nine hundred ninety-eight thousand, two hundred seventy".