689934 has 16 divisors (see below), whose sum is σ = 1577088. Its totient is φ = 197112.

The previous prime is 689929. The next prime is 689951. The reversal of 689934 is 439986.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 689892 and 689901.

It is a congruent number.

It is an unprimeable number.

689934 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 7 ways as a sum of consecutive naturals, for example, 8172 + ... + 8255.

It is an arithmetic number, because the mean of its divisors is an integer number (98568).

2⁶⁸⁹⁹³⁴ is an apocalyptic number.

689934 is an abundant number, since it is smaller than the sum of its proper divisors (887154).

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

689934 is a wasteful number, since it uses less digits than its factorization.

689934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16439.

The product of its digits is 46656, while the sum is 39.

The square root of 689934 is about 830.6226580102. The cubic root of 689934 is about 88.3627416816.

The spelling of 689934 in words is "six hundred eighty-nine thousand, nine hundred thirty-four".