198570 has 16 divisors (see below), whose sum is σ = 476640. Its totient is φ = 52944.

The previous prime is 198553. The next prime is 198571. The reversal of 198570 is 75891.

198570 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 6619 = 198570 / (1 + 9 + 8 + 5 + 7 + 0).

It is not an unprimeable number, because it can be changed into a prime (198571) 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, 3280 + ... + 3339.

It is an arithmetic number, because the mean of its divisors is an integer number (29790).

2¹⁹⁸⁵⁷⁰ is an apocalyptic number.

198570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198570 is an abundant number, since it is smaller than the sum of its proper divisors (278070).

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

198570 is a wasteful number, since it uses less digits than its factorization.

198570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6629.

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 198570 is about 445.6119387988. The cubic root of 198570 is about 58.3406430749.

The spelling of 198570 in words is "one hundred ninety-eight thousand, five hundred seventy".