198506097 has 12 divisors (see below), whose sum is σ = 288219204. Its totient is φ = 131650560.

The previous prime is 198506081. The next prime is 198506117. The reversal of 198506097 is 790605891.

198506097 is nontrivially palindromic in base 6.

It can be written as a sum of positive squares in 2 ways, for example, as 85211361 + 113294736 = 9231^2 + 10644^2 .

It is not a de Polignac number, because 198506097 - 2⁴ = 198506081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198506597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55404 + ... + 58877.

It is an arithmetic number, because the mean of its divisors is an integer number (24018267).

Almost surely, 2^198506097 is an apocalyptic number.

It is an amenable number.

198506097 is a deficient number, since it is larger than the sum of its proper divisors (89713107).

198506097 is a wasteful number, since it uses less digits than its factorization.

198506097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114480 (or 114477 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 198506097 is about 14089.2191763774. The cubic root of 198506097 is about 583.3438408629.

The spelling of 198506097 in words is "one hundred ninety-eight million, five hundred six thousand, ninety-seven".