218097 has 12 divisors (see below), whose sum is σ = 343824. Its totient is φ = 132120.

The previous prime is 218087. The next prime is 218107. The reversal of 218097 is 790812.

It is an interprime number because it is at equal distance from previous prime (218087) and next prime (218107).

It is not a de Polignac number, because 218097 - 2⁴ = 218081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 218097.

It is not an unprimeable number, because it can be changed into a prime (218047) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1003 + ... + 1200.

It is an arithmetic number, because the mean of its divisors is an integer number (28652).

2²¹⁸⁰⁹⁷ is an apocalyptic number.

It is an amenable number.

218097 is a deficient number, since it is larger than the sum of its proper divisors (125727).

218097 is a wasteful number, since it uses less digits than its factorization.

218097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220 (or 2217 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 218097 is about 467.0085652319. The cubic root of 218097 is about 60.1935416890.

It can be divided in two parts, 21 and 8097, that added together give a palindrome (8118).

The spelling of 218097 in words is "two hundred eighteen thousand, ninety-seven".