197197 has 16 divisors (see below), whose sum is σ = 266112. Its totient is φ = 141120.

The previous prime is 197161. The next prime is 197203. The reversal of 197197 is 791791.

It is a happy number.

It is not a de Polignac number, because 197197 - 2¹⁵ = 164429 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197117) 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 15 ways as a sum of consecutive naturals, for example, 903 + ... + 1099.

It is an arithmetic number, because the mean of its divisors is an integer number (16632).

2¹⁹⁷¹⁹⁷ is an apocalyptic number.

It is an amenable number.

197197 is a deficient number, since it is larger than the sum of its proper divisors (68915).

197197 is a wasteful number, since it uses less digits than its factorization.

197197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228.

The product of its digits is 3969, while the sum is 34.

The square root of 197197 is about 444.0686883805. The cubic root of 197197 is about 58.2058677063.

The spelling of 197197 in words is "one hundred ninety-seven thousand, one hundred ninety-seven".