198608811 has 8 divisors (see below), whose sum is σ = 264910800. Its totient is φ = 132356352.

The previous prime is 198608801. The next prime is 198608819. The reversal of 198608811 is 118806891.

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

It is not a de Polignac number, because 198608811 - 2⁵ = 198608779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198608819) 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, 1710 + ... + 20003.

It is an arithmetic number, because the mean of its divisors is an integer number (33113850).

Almost surely, 2^198608811 is an apocalyptic number.

198608811 is a deficient number, since it is larger than the sum of its proper divisors (66301989).

198608811 is a wasteful number, since it uses less digits than its factorization.

198608811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24765.

The product of its (nonzero) digits is 27648, while the sum is 42.

The square root of 198608811 is about 14092.8638324508. The cubic root of 198608811 is about 583.4444376853. Note that the first 4 decimals are identical.

The spelling of 198608811 in words is "one hundred ninety-eight million, six hundred eight thousand, eight hundred eleven".