198197213 has 8 divisors (see below), whose sum is σ = 200037600. Its totient is φ = 196365328.

The previous prime is 198197201. The next prime is 198197221. The reversal of 198197213 is 312791891.

It is a happy number.

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 198197213 - 2⁶ = 198197149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198127213) 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, 50558 + ... + 54336.

It is an arithmetic number, because the mean of its divisors is an integer number (25004700).

Almost surely, 2^198197213 is an apocalyptic number.

It is an amenable number.

198197213 is a deficient number, since it is larger than the sum of its proper divisors (1840387).

198197213 is a wasteful number, since it uses less digits than its factorization.

198197213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4251.

The product of its digits is 27216, while the sum is 41.

The square root of 198197213 is about 14078.2531941999. The cubic root of 198197213 is about 583.0411144456.

The spelling of 198197213 in words is "one hundred ninety-eight million, one hundred ninety-seven thousand, two hundred thirteen".