689420 has 12 divisors (see below), whose sum is σ = 1447824. Its totient is φ = 275760.

The previous prime is 689411. The next prime is 689431. The reversal of 689420 is 24986.

It is an unprimeable number.

689420 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 3 ways as a sum of consecutive naturals, for example, 17216 + ... + 17255.

It is an arithmetic number, because the mean of its divisors is an integer number (120652).

2⁶⁸⁹⁴²⁰ is an apocalyptic number.

It is an amenable number.

689420 is an abundant number, since it is smaller than the sum of its proper divisors (758404).

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

689420 is a wasteful number, since it uses less digits than its factorization.

689420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34480 (or 34478 counting only the distinct ones).

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

The square root of 689420 is about 830.3131939214. The cubic root of 689420 is about 88.3407928513.

The spelling of 689420 in words is "six hundred eighty-nine thousand, four hundred twenty".