689606 has 8 divisors (see below), whose sum is σ = 1062480. Its totient is φ = 335448.

The previous prime is 689603. The next prime is 689621. The reversal of 689606 is 606986.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689603) 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, 4586 + ... + 4733.

It is an arithmetic number, because the mean of its divisors is an integer number (132810).

2⁶⁸⁹⁶⁰⁶ is an apocalyptic number.

689606 is a deficient number, since it is larger than the sum of its proper divisors (372874).

689606 is a wasteful number, since it uses less digits than its factorization.

689606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9358.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 689606 is about 830.4251922961. The cubic root of 689606 is about 88.3487366833.

The spelling of 689606 in words is "six hundred eighty-nine thousand, six hundred six".