198755 has 8 divisors (see below), whose sum is σ = 241152. Its totient is φ = 157248.

The previous prime is 198733. The next prime is 198761. The reversal of 198755 is 557891.

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

It is a cyclic number.

It is not a de Polignac number, because 198755 - 2¹² = 194659 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 479 + ... + 791.

It is an arithmetic number, because the mean of its divisors is an integer number (30144).

2¹⁹⁸⁷⁵⁵ is an apocalyptic number.

198755 is a deficient number, since it is larger than the sum of its proper divisors (42397).

198755 is a wasteful number, since it uses less digits than its factorization.

198755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445.

The product of its digits is 12600, while the sum is 35.

The square root of 198755 is about 445.8194701894. The cubic root of 198755 is about 58.3587553592.

The spelling of 198755 in words is "one hundred ninety-eight thousand, seven hundred fifty-five".