823265 has 4 divisors (see below), whose sum is σ = 987924. Its totient is φ = 658608.

The previous prime is 823261. The next prime is 823271. The reversal of 823265 is 562328.

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 425104 + 398161 = 652^2 + 631^2 .

It is a cyclic number.

It is not a de Polignac number, because 823265 - 2² = 823261 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (823261) 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, 82322 + ... + 82331.

It is an arithmetic number, because the mean of its divisors is an integer number (246981).

2⁸²³²⁶⁵ is an apocalyptic number.

It is an amenable number.

823265 is a deficient number, since it is larger than the sum of its proper divisors (164659).

823265 is a wasteful number, since it uses less digits than its factorization.

823265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164658.

The product of its digits is 2880, while the sum is 26.

The square root of 823265 is about 907.3395174906. The cubic root of 823265 is about 93.7230796780.

The spelling of 823265 in words is "eight hundred twenty-three thousand, two hundred sixty-five".