689588 has 12 divisors (see below), whose sum is σ = 1277892. Its totient is φ = 324480.

The previous prime is 689587. The next prime is 689597. The reversal of 689588 is 885986.

It can be written as a sum of positive squares in 2 ways, for example, as 327184 + 362404 = 572^2 + 602^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689581) 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, 5003 + ... + 5138.

It is an arithmetic number, because the mean of its divisors is an integer number (106491).

2⁶⁸⁹⁵⁸⁸ is an apocalyptic number.

689588 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

689588 is a deficient number, since it is larger than the sum of its proper divisors (588304).

689588 is a wasteful number, since it uses less digits than its factorization.

689588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10162 (or 10160 counting only the distinct ones).

The product of its digits is 138240, while the sum is 44.

The square root of 689588 is about 830.4143544039. The cubic root of 689588 is about 88.3479679878.

The spelling of 689588 in words is "six hundred eighty-nine thousand, five hundred eighty-eight".