610609 has 4 divisors (see below), whose sum is σ = 615204. Its totient is φ = 606016.

The previous prime is 610583. The next prime is 610619. The reversal of 610609 is 906016.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 394384 + 216225 = 628^2 + 465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-610609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 610609.

It is not an unprimeable number, because it can be changed into a prime (610619) 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, 2092 + ... + 2365.

It is an arithmetic number, because the mean of its divisors is an integer number (153801).

2⁶¹⁰⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

610609 is a deficient number, since it is larger than the sum of its proper divisors (4595).

610609 is a wasteful number, since it uses less digits than its factorization.

610609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4594.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 610609 is about 781.4147426303. The cubic root of 610609 is about 84.8374749075.

The spelling of 610609 in words is "six hundred ten thousand, six hundred nine".