689340 has 24 divisors (see below), whose sum is σ = 1930320. Its totient is φ = 183808.

The previous prime is 689321. The next prime is 689341. The reversal of 689340 is 43986.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 689298 and 689307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689341) by changing a digit.

689340 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, 5685 + ... + 5804.

It is an arithmetic number, because the mean of its divisors is an integer number (80430).

2⁶⁸⁹³⁴⁰ is an apocalyptic number.

689340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

689340 is an abundant number, since it is smaller than the sum of its proper divisors (1240980).

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

689340 is a wasteful number, since it uses less digits than its factorization.

689340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11501 (or 11499 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 689340 is about 830.2650179310. The cubic root of 689340 is about 88.3373757099.

The spelling of 689340 in words is "six hundred eighty-nine thousand, three hundred forty".