689222 has 4 divisors (see below), whose sum is σ = 1033836. Its totient is φ = 344610.

The previous prime is 689219. The next prime is 689233. The reversal of 689222 is 222986.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222986 = 2 ⋅111493.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172304 + ... + 172307.

It is an arithmetic number, because the mean of its divisors is an integer number (258459).

2⁶⁸⁹²²² is an apocalyptic number.

689222 is a deficient number, since it is larger than the sum of its proper divisors (344614).

689222 is a wasteful number, since it uses less digits than its factorization.

689222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344613.

The product of its digits is 3456, while the sum is 29.

The square root of 689222 is about 830.1939532423. The cubic root of 689222 is about 88.3323349438.

The spelling of 689222 in words is "six hundred eighty-nine thousand, two hundred twenty-two".