197218 has 8 divisors (see below), whose sum is σ = 338112. Its totient is φ = 84516.

The previous prime is 197207. The next prime is 197221. The reversal of 197218 is 812791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

197218 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7030 + ... + 7057.

It is an arithmetic number, because the mean of its divisors is an integer number (42264).

2¹⁹⁷²¹⁸ is an apocalyptic number.

197218 is a deficient number, since it is larger than the sum of its proper divisors (140894).

197218 is a wasteful number, since it uses less digits than its factorization.

197218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14096.

The product of its digits is 1008, while the sum is 28.

The square root of 197218 is about 444.0923327417. The cubic root of 197218 is about 58.2079337956.

The spelling of 197218 in words is "one hundred ninety-seven thousand, two hundred eighteen".