689004 has 18 divisors (see below), whose sum is σ = 1741740. Its totient is φ = 229656.

The previous prime is 688999. The next prime is 689021. The reversal of 689004 is 400986.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

689004 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9534 + ... + 9605.

2⁶⁸⁹⁰⁰⁴ is an apocalyptic number.

It is an amenable number.

689004 is an abundant number, since it is smaller than the sum of its proper divisors (1052736).

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

689004 is a wasteful number, since it uses less digits than its factorization.

689004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19149 (or 19144 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 689004 is about 830.0626482381. The cubic root of 689004 is about 88.3230208285.

The spelling of 689004 in words is "six hundred eighty-nine thousand, four".