200197 has 4 divisors (see below), whose sum is σ = 202176. Its totient is φ = 198220.

The previous prime is 200191. The next prime is 200201. The reversal of 200197 is 791002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 200197 - 2¹⁵ = 167429 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 (200191) 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 in 3 ways as a sum of consecutive naturals, for example, 829 + ... + 1042.

It is an arithmetic number, because the mean of its divisors is an integer number (50544).

2²⁰⁰¹⁹⁷ is an apocalyptic number.

It is an amenable number.

200197 is a deficient number, since it is larger than the sum of its proper divisors (1979).

200197 is a wasteful number, since it uses less digits than its factorization.

200197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 200197 is about 447.4337939852. The cubic root of 200197 is about 58.4995495132.

Adding to 200197 its reverse (791002), we get a palindrome (991199).

The spelling of 200197 in words is "two hundred thousand, one hundred ninety-seven".