565265 has 8 divisors (see below), whose sum is σ = 684288. Its totient is φ = 448240.

The previous prime is 565261. The next prime is 565273. The reversal of 565265 is 562565.

565265 = T₂₆₇ + T₂₆₈ + ... + T₂₈₁.

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

It is not a de Polignac number, because 565265 - 2² = 565261 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (565261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224 + ... + 1086.

It is an arithmetic number, because the mean of its divisors is an integer number (85536).

2⁵⁶⁵²⁶⁵ is an apocalyptic number.

It is an amenable number.

565265 is a deficient number, since it is larger than the sum of its proper divisors (119023).

565265 is a wasteful number, since it uses less digits than its factorization.

565265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999.

The product of its digits is 9000, while the sum is 29.

The square root of 565265 is about 751.8410736319. The cubic root of 565265 is about 82.6832169286.

The spelling of 565265 in words is "five hundred sixty-five thousand, two hundred sixty-five".