500609 has 4 divisors (see below), whose sum is σ = 502740. Its totient is φ = 498480.

The previous prime is 500603. The next prime is 500629. The reversal of 500609 is 906005.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 906005 = 5 ⋅181201.

It can be written as a sum of positive squares in 2 ways, for example, as 10609 + 490000 = 103^2 + 700^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-500609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (500603) 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, 662 + ... + 1199.

It is an arithmetic number, because the mean of its divisors is an integer number (125685).

2⁵⁰⁰⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

500609 is a deficient number, since it is larger than the sum of its proper divisors (2131).

500609 is a wasteful number, since it uses less digits than its factorization.

500609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 500609 is about 707.5372781699. The cubic root of 500609 is about 79.4022637656.

The spelling of 500609 in words is "five hundred thousand, six hundred nine".