198495 has 24 divisors (see below), whose sum is σ = 376272. Its totient is φ = 96000.

The previous prime is 198491. The next prime is 198503. The reversal of 198495 is 594891.

It is not a de Polignac number, because 198495 - 2² = 198491 is a prime.

198495 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 198495.

It is not an unprimeable number, because it can be changed into a prime (198491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 295 + ... + 695.

It is an arithmetic number, because the mean of its divisors is an integer number (15678).

2¹⁹⁸⁴⁹⁵ is an apocalyptic number.

198495 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

198495 is a deficient number, since it is larger than the sum of its proper divisors (177777).

198495 is a wasteful number, since it uses less digits than its factorization.

198495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423 (or 420 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 198495 is about 445.5277769118. The cubic root of 198495 is about 58.3332970521. Note that the first 3 decimals are identical.

The spelling of 198495 in words is "one hundred ninety-eight thousand, four hundred ninety-five".