198547 has 4 divisors (see below), whose sum is σ = 199456. Its totient is φ = 197640.

The previous prime is 198533. The next prime is 198553. The reversal of 198547 is 745891.

It is a happy number.

198547 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 745891 = 31 ⋅24061.

It is a cyclic number.

It is not a de Polignac number, because 198547 - 2¹¹ = 196499 is a prime.

It is a super-2 number, since 2×198547² = 78841822418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97 + ... + 637.

It is an arithmetic number, because the mean of its divisors is an integer number (49864).

2¹⁹⁸⁵⁴⁷ is an apocalyptic number.

198547 is a deficient number, since it is larger than the sum of its proper divisors (909).

198547 is an equidigital number, since it uses as much as digits as its factorization.

198547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908.

The product of its digits is 10080, while the sum is 34.

The square root of 198547 is about 445.5861308434. The cubic root of 198547 is about 58.3383904913.

The spelling of 198547 in words is "one hundred ninety-eight thousand, five hundred forty-seven".