609873 has 8 divisors (see below), whose sum is σ = 887136. Its totient is φ = 369600.

The previous prime is 609859. The next prime is 609877. The reversal of 609873 is 378906.

It is a happy number.

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

It is not a de Polignac number, because 609873 - 2⁶ = 609809 is a prime.

It is a super-2 number, since 2×609873² = 743890152258, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 18481 = 609873 / (6 + 0 + 9 + 8 + 7 + 3).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (609877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9208 + ... + 9273.

It is an arithmetic number, because the mean of its divisors is an integer number (110892).

2⁶⁰⁹⁸⁷³ is an apocalyptic number.

It is an amenable number.

609873 is a deficient number, since it is larger than the sum of its proper divisors (277263).

609873 is a wasteful number, since it uses less digits than its factorization.

609873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18495.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 609873 is about 780.9436599397. The cubic root of 609873 is about 84.8033748064.

Adding to 609873 its sum of digits (33), we get a palindrome (609906).

609873 divided by its sum of digits (33) gives a palindrome (18481).

The spelling of 609873 in words is "six hundred nine thousand, eight hundred seventy-three".