198636601 has 2 divisors, whose sum is σ = 198636602. Its totient is φ = 198636600.

The previous prime is 198636569. The next prime is 198636673. The reversal of 198636601 is 106636891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153760000 + 44876601 = 12400^2 + 6699^2 .

It is an emirp because it is prime and its reverse (106636891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 198636601 - 2⁵ = 198636569 is a prime.

It is not a weakly prime, because it can be changed into another prime (198636101) 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 as a sum of consecutive naturals, namely, 99318300 + 99318301.

It is an arithmetic number, because the mean of its divisors is an integer number (99318301).

Almost surely, 2^198636601 is an apocalyptic number.

It is an amenable number.

198636601 is a deficient number, since it is larger than the sum of its proper divisors (1).

198636601 is an equidigital number, since it uses as much as digits as its factorization.

198636601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 198636601 is about 14093.8497579618. The cubic root of 198636601 is about 583.4716489063.

The spelling of 198636601 in words is "one hundred ninety-eight million, six hundred thirty-six thousand, six hundred one".