810198 has 48 divisors (see below), whose sum is σ = 1946880. Its totient is φ = 242352.

The previous prime is 810193. The next prime is 810209. The reversal of 810198 is 891018.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7815 + ... + 7917.

It is an arithmetic number, because the mean of its divisors is an integer number (40560).

2⁸¹⁰¹⁹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 810198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (973440).

810198 is an abundant number, since it is smaller than the sum of its proper divisors (1136682).

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

810198 is a wasteful number, since it uses less digits than its factorization.

810198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 810198 is about 900.1099932786. The cubic root of 810198 is about 93.2245700170.

The spelling of 810198 in words is "eight hundred ten thousand, one hundred ninety-eight".