689459 has 2 divisors, whose sum is σ = 689460. Its totient is φ = 689458.

The previous prime is 689441. The next prime is 689461. The reversal of 689459 is 954986.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 689459 - 2¹⁶ = 623923 is a prime.

Together with 689461, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (689959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344729 + 344730.

It is an arithmetic number, because the mean of its divisors is an integer number (344730).

2⁶⁸⁹⁴⁵⁹ is an apocalyptic number.

689459 is a deficient number, since it is larger than the sum of its proper divisors (1).

689459 is an equidigital number, since it uses as much as digits as its factorization.

689459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 41.

The square root of 689459 is about 830.3366787033. The cubic root of 689459 is about 88.3424586119.

The spelling of 689459 in words is "six hundred eighty-nine thousand, four hundred fifty-nine".