689173 has 4 divisors (see below), whose sum is σ = 695968. Its totient is φ = 682380.

The previous prime is 689167. The next prime is 689201. The reversal of 689173 is 371986.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 371986 = 2 ⋅185993.

It is a cyclic number.

It is not a de Polignac number, because 689173 - 2⁵ = 689141 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 (689113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3243 + ... + 3448.

It is an arithmetic number, because the mean of its divisors is an integer number (173992).

2⁶⁸⁹¹⁷³ is an apocalyptic number.

It is an amenable number.

689173 is a deficient number, since it is larger than the sum of its proper divisors (6795).

689173 is a wasteful number, since it uses less digits than its factorization.

689173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6794.

The product of its digits is 9072, while the sum is 34.

The square root of 689173 is about 830.1644415416. The cubic root of 689173 is about 88.3302415753.

The spelling of 689173 in words is "six hundred eighty-nine thousand, one hundred seventy-three".