198559563 has 8 divisors (see below), whose sum is σ = 265075776. Its totient is φ = 132208200.

The previous prime is 198559553. The next prime is 198559573. The reversal of 198559563 is 365955891.

It is an interprime number because it is at equal distance from previous prime (198559553) and next prime (198559573).

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

It is not a de Polignac number, because 198559563 - 2⁶ = 198559499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198559553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38373 + ... + 43238.

It is an arithmetic number, because the mean of its divisors is an integer number (33134472).

Almost surely, 2^198559563 is an apocalyptic number.

198559563 is a deficient number, since it is larger than the sum of its proper divisors (66516213).

198559563 is an equidigital number, since it uses as much as digits as its factorization.

198559563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82425.

The product of its digits is 1458000, while the sum is 51.

The square root of 198559563 is about 14091.1164568319. The cubic root of 198559563 is about 583.3962091319.

The spelling of 198559563 in words is "one hundred ninety-eight million, five hundred fifty-nine thousand, five hundred sixty-three".