689226 has 16 divisors (see below), whose sum is σ = 1386624. Its totient is φ = 228384.

The previous prime is 689219. The next prime is 689233. The reversal of 689226 is 622986.

It is an interprime number because it is at equal distance from previous prime (689219) and next prime (689233).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

689226 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 in 7 ways as a sum of consecutive naturals, for example, 1695 + ... + 2061.

It is an arithmetic number, because the mean of its divisors is an integer number (86664).

2⁶⁸⁹²²⁶ is an apocalyptic number.

689226 is an abundant number, since it is smaller than the sum of its proper divisors (697398).

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

689226 is a wasteful number, since it uses less digits than its factorization.

689226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685.

The product of its digits is 10368, while the sum is 33.

The square root of 689226 is about 830.1963623144. The cubic root of 689226 is about 88.3325058267.

The spelling of 689226 in words is "six hundred eighty-nine thousand, two hundred twenty-six".