8197218 has 12 divisors (see below), whose sum is σ = 17760678. Its totient is φ = 2732400.

The previous prime is 8197201. The next prime is 8197271. The reversal of 8197218 is 8127918.

It can be written as a sum of positive squares in only one way, i.e., 8105409 + 91809 = 2847^2 + 303^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 227683 + ... + 227718.

Almost surely, 2^8197218 is an apocalyptic number.

8197218 is an abundant number, since it is smaller than the sum of its proper divisors (9563460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8197218 is a wasteful number, since it uses less digits than its factorization.

8197218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455409 (or 455406 counting only the distinct ones).

The product of its digits is 8064, while the sum is 36.

The square root of 8197218 is about 2863.0784131770. The cubic root of 8197218 is about 201.6301601230.

The spelling of 8197218 in words is "eight million, one hundred ninety-seven thousand, two hundred eighteen".