It is a happy number.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 986222 = 2 ⋅493111.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-222689 is a prime.
It is an Ulam number.
It is a Duffinian number.
It is a plaindrome in base 10.
2222689 is an apocalyptic number.
It is an amenable number.
222689 is an equidigital number, since it uses as much as digits as its factorization.
222689 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2766.
The square root of 222689 is about 471.8993536762. The cubic root of 222689 is about 60.6130663442.
The spelling of 222689 in words is "two hundred twenty-two thousand, six hundred eighty-nine".