689434 has 8 divisors (see below), whose sum is σ = 1088640. Its totient is φ = 326556.

The previous prime is 689431. The next prime is 689441. The reversal of 689434 is 434986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 689434.

It is not an unprimeable number, because it can be changed into a prime (689431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9034 + ... + 9109.

It is an arithmetic number, because the mean of its divisors is an integer number (136080).

2⁶⁸⁹⁴³⁴ is an apocalyptic number.

689434 is a deficient number, since it is larger than the sum of its proper divisors (399206).

689434 is a wasteful number, since it uses less digits than its factorization.

689434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18164.

The product of its digits is 20736, while the sum is 34.

The square root of 689434 is about 830.3216244324. The cubic root of 689434 is about 88.3413908239.

The spelling of 689434 in words is "six hundred eighty-nine thousand, four hundred thirty-four".