198897 has 8 divisors (see below), whose sum is σ = 267456. Its totient is φ = 131472.

The previous prime is 198859. The next prime is 198899. The reversal of 198897 is 798891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 198897 - 2⁶ = 198833 is a prime.

Its product of digits (36288) is a multiple of the sum of its prime divisors (567).

It is not an unprimeable number, because it can be changed into a prime (198899) 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, 303 + ... + 699.

It is an arithmetic number, because the mean of its divisors is an integer number (33432).

2¹⁹⁸⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

198897 is a deficient number, since it is larger than the sum of its proper divisors (68559).

198897 is a wasteful number, since it uses less digits than its factorization.

198897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567.

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

The square root of 198897 is about 445.9786990429. The cubic root of 198897 is about 58.3726501384.

The spelling of 198897 in words is "one hundred ninety-eight thousand, eight hundred ninety-seven".