198734 has 4 divisors (see below), whose sum is σ = 298104. Its totient is φ = 99366.

The previous prime is 198733. The next prime is 198761. The reversal of 198734 is 437891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 437891 = 397 ⋅1103.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 198734.

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 198734.

It is not an unprimeable number, because it can be changed into a prime (198733) by changing a digit.

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 as a sum of consecutive naturals, namely, 49682 + ... + 49685.

It is an arithmetic number, because the mean of its divisors is an integer number (74526).

2¹⁹⁸⁷³⁴ is an apocalyptic number.

198734 is a deficient number, since it is larger than the sum of its proper divisors (99370).

198734 is an equidigital number, since it uses as much as digits as its factorization.

198734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99369.

The product of its digits is 6048, while the sum is 32.

The square root of 198734 is about 445.7959174331. The cubic root of 198734 is about 58.3566999358.

The spelling of 198734 in words is "one hundred ninety-eight thousand, seven hundred thirty-four".