689814 has 24 divisors (see below), whose sum is σ = 1574040. Its totient is φ = 217728.

The previous prime is 689807. The next prime is 689827. The reversal of 689814 is 418986.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 689814.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 667 + ... + 1350.

It is an arithmetic number, because the mean of its divisors is an integer number (65585).

2⁶⁸⁹⁸¹⁴ is an apocalyptic number.

689814 is an abundant number, since it is smaller than the sum of its proper divisors (884226).

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

689814 is a wasteful number, since it uses less digits than its factorization.

689814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2044 (or 2041 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 689814 is about 830.5504199024. The cubic root of 689814 is about 88.3576184167.

The spelling of 689814 in words is "six hundred eighty-nine thousand, eight hundred fourteen".