218069 has 2 divisors, whose sum is σ = 218070. Its totient is φ = 218068.

The previous prime is 218047. The next prime is 218077. The reversal of 218069 is 960812.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131044 + 87025 = 362^2 + 295^2 .

It is a cyclic number.

It is not a de Polignac number, because 218069 - 2¹² = 213973 is a prime.

It is a super-2 number, since 2×218069² = 95108177522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218969) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109034 + 109035.

It is an arithmetic number, because the mean of its divisors is an integer number (109035).

2²¹⁸⁰⁶⁹ is an apocalyptic number.

It is an amenable number.

218069 is a deficient number, since it is larger than the sum of its proper divisors (1).

218069 is an equidigital number, since it uses as much as digits as its factorization.

218069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 218069 is about 466.9785862328. The cubic root of 218069 is about 60.1909656314.

The spelling of 218069 in words is "two hundred eighteen thousand, sixty-nine".