210197 has 16 divisors (see below), whose sum is σ = 255360. Its totient is φ = 171072.

The previous prime is 210193. The next prime is 210209. The reversal of 210197 is 791012.

210197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 210197 - 2² = 210193 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5663 + ... + 5699.

It is an arithmetic number, because the mean of its divisors is an integer number (15960).

2²¹⁰¹⁹⁷ is an apocalyptic number.

It is an amenable number.

210197 is a deficient number, since it is larger than the sum of its proper divisors (45163).

210197 is a wasteful number, since it uses less digits than its factorization.

210197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92.

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 210197 is about 458.4724637315. The cubic root of 210197 is about 59.4578002683.

The spelling of 210197 in words is "two hundred ten thousand, one hundred ninety-seven".