198688059 has 10 divisors (see below), whose sum is σ = 296805740. Its totient is φ = 132458652.

The previous prime is 198688051. The next prime is 198688069. The reversal of 198688059 is 950886891.

It is not a de Polignac number, because 198688059 - 2³ = 198688051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 198687996 and 198688014.

It is not an unprimeable number, because it can be changed into a prime (198688051) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1226389 + ... + 1226550.

It is an arithmetic number, because the mean of its divisors is an integer number (29680574).

Almost surely, 2^198688059 is an apocalyptic number.

198688059 is a deficient number, since it is larger than the sum of its proper divisors (98117681).

198688059 is an equidigital number, since it uses as much as digits as its factorization.

198688059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452951 (or 2452942 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 54.

The square root of 198688059 is about 14095.6751878014. The cubic root of 198688059 is about 583.5220284967.

The spelling of 198688059 in words is "one hundred ninety-eight million, six hundred eighty-eight thousand, fifty-nine".