198795775 has 24 divisors (see below), whose sum is σ = 251265168. Its totient is φ = 156000000.

The previous prime is 198795763. The next prime is 198795797. The reversal of 198795775 is 577597891.

It is not a de Polignac number, because 198795775 - 2¹⁵ = 198763007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 330475 + ... + 331075.

It is an arithmetic number, because the mean of its divisors is an integer number (10469382).

Almost surely, 2^198795775 is an apocalyptic number.

198795775 is a deficient number, since it is larger than the sum of its proper divisors (52469393).

198795775 is a wasteful number, since it uses less digits than its factorization.

198795775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843 (or 838 counting only the distinct ones).

The product of its digits is 5556600, while the sum is 58.

The square root of 198795775 is about 14099.4955583524. The cubic root of 198795775 is about 583.6274589287.

The spelling of 198795775 in words is "one hundred ninety-eight million, seven hundred ninety-five thousand, seven hundred seventy-five".