198635097 has 8 divisors (see below), whose sum is σ = 265093920. Its totient is φ = 132299840.

The previous prime is 198635077. The next prime is 198635111. The reversal of 198635097 is 790536891.

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 198635097 - 2⁶ = 198635033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198635077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27072 + ... + 33617.

It is an arithmetic number, because the mean of its divisors is an integer number (33136740).

Almost surely, 2^198635097 is an apocalyptic number.

It is an amenable number.

198635097 is a deficient number, since it is larger than the sum of its proper divisors (66458823).

198635097 is a wasteful number, since it uses less digits than its factorization.

198635097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61783.

The product of its (nonzero) digits is 408240, while the sum is 48.

The square root of 198635097 is about 14093.7964012540. The cubic root of 198635097 is about 583.4701762949.

The spelling of 198635097 in words is "one hundred ninety-eight million, six hundred thirty-five thousand, ninety-seven".