689124 has 12 divisors (see below), whose sum is σ = 1607984. Its totient is φ = 229704.

The previous prime is 689113. The next prime is 689131. The reversal of 689124 is 421986.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 689091 and 689100.

It is an unprimeable number.

689124 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28702 + ... + 28725.

2⁶⁸⁹¹²⁴ is an apocalyptic number.

It is an amenable number.

689124 is an abundant number, since it is smaller than the sum of its proper divisors (918860).

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

689124 is a wasteful number, since it uses less digits than its factorization.

689124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57434 (or 57432 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The square root of 689124 is about 830.1349287917. The cubic root of 689124 is about 88.3281481075.

The spelling of 689124 in words is "six hundred eighty-nine thousand, one hundred twenty-four".