609265 has 4 divisors (see below), whose sum is σ = 731124. Its totient is φ = 487408.

The previous prime is 609253. The next prime is 609269. The reversal of 609265 is 562906.

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 430336 + 178929 = 656^2 + 423^2 .

It is a cyclic number.

It is not a de Polignac number, because 609265 - 2⁵ = 609233 is a prime.

It is a Duffinian number.

609265 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (609269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60922 + ... + 60931.

It is an arithmetic number, because the mean of its divisors is an integer number (182781).

2⁶⁰⁹²⁶⁵ is an apocalyptic number.

It is an amenable number.

609265 is a deficient number, since it is larger than the sum of its proper divisors (121859).

609265 is a wasteful number, since it uses less digits than its factorization.

609265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121858.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 609265 is about 780.5542902323. The cubic root of 609265 is about 84.7751844589.

The spelling of 609265 in words is "six hundred nine thousand, two hundred sixty-five".