689351 has 6 divisors (see below), whose sum is σ = 746640. Its totient is φ = 636168.

The previous prime is 689341. The next prime is 689357. The reversal of 689351 is 153986.

It is not a de Polignac number, because 689351 - 2¹⁴ = 672967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689357) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1871 + ... + 2208.

It is an arithmetic number, because the mean of its divisors is an integer number (124440).

2⁶⁸⁹³⁵¹ is an apocalyptic number.

689351 is a deficient number, since it is larger than the sum of its proper divisors (57289).

689351 is a wasteful number, since it uses less digits than its factorization.

689351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4105 (or 4092 counting only the distinct ones).

The product of its digits is 6480, while the sum is 32.

The square root of 689351 is about 830.2716422955. The cubic root of 689351 is about 88.3378455826.

The spelling of 689351 in words is "six hundred eighty-nine thousand, three hundred fifty-one".