689575 has 6 divisors (see below), whose sum is σ = 855104. Its totient is φ = 551640.

The previous prime is 689561. The next prime is 689581. The reversal of 689575 is 575986.

It is a happy number.

689575 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 689575 - 2⁹ = 689063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13767 + ... + 13816.

2⁶⁸⁹⁵⁷⁵ is an apocalyptic number.

689575 is a deficient number, since it is larger than the sum of its proper divisors (165529).

689575 is a wasteful number, since it uses less digits than its factorization.

689575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27593 (or 27588 counting only the distinct ones).

The product of its digits is 75600, while the sum is 40.

The square root of 689575 is about 830.4065269493. The cubic root of 689575 is about 88.3474128105.

The spelling of 689575 in words is "six hundred eighty-nine thousand, five hundred seventy-five".