198630 has 24 divisors (see below), whose sum is σ = 516672. Its totient is φ = 52944.

The previous prime is 198623. The next prime is 198637. The reversal of 198630 is 36891.

It is an interprime number because it is at equal distance from previous prime (198623) and next prime (198637).

It is a junction number, because it is equal to n+sod(n) for n = 198594 and 198603.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 198630.

It is not an unprimeable number, because it can be changed into a prime (198637) by changing a digit.

198630 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 11 ways as a sum of consecutive naturals, for example, 1014 + ... + 1193.

It is an arithmetic number, because the mean of its divisors is an integer number (21528).

2¹⁹⁸⁶³⁰ is an apocalyptic number.

198630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198630 is an abundant number, since it is smaller than the sum of its proper divisors (318042).

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

198630 is a wasteful number, since it uses less digits than its factorization.

198630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220 (or 2217 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 198630 is about 445.6792568653. The cubic root of 198630 is about 58.3465185614.

It can be divided in two parts, 1986 and 30, that added together give a triangular number (2016 = T₆₃).

The spelling of 198630 in words is "one hundred ninety-eight thousand, six hundred thirty".