987198 has 16 divisors (see below), whose sum is σ = 2023056. Its totient is φ = 320960.

The previous prime is 987193. The next prime is 987199. The reversal of 987198 is 891789.

987198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1761 + ... + 2252.

It is an arithmetic number, because the mean of its divisors is an integer number (126441).

2⁹⁸⁷¹⁹⁸ is an apocalyptic number.

987198 is an abundant number, since it is smaller than the sum of its proper divisors (1035858).

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

987198 is a wasteful number, since it uses less digits than its factorization.

987198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4059.

The product of its digits is 36288, while the sum is 42.

The square root of 987198 is about 993.5783814073. The cubic root of 987198 is about 99.5714325903.

The spelling of 987198 in words is "nine hundred eighty-seven thousand, one hundred ninety-eight".