856265 has 4 divisors (see below), whose sum is σ = 1027524. Its totient is φ = 685008.

The previous prime is 856249. The next prime is 856277. The reversal of 856265 is 562658.

It is a happy number.

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 203401 + 652864 = 451^2 + 808^2 .

It is a cyclic number.

It is not a de Polignac number, because 856265 - 2⁴ = 856249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85622 + ... + 85631.

It is an arithmetic number, because the mean of its divisors is an integer number (256881).

2⁸⁵⁶²⁶⁵ is an apocalyptic number.

It is an amenable number.

856265 is a deficient number, since it is larger than the sum of its proper divisors (171259).

856265 is a wasteful number, since it uses less digits than its factorization.

856265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171258.

The product of its digits is 14400, while the sum is 32.

The square root of 856265 is about 925.3458812790. The cubic root of 856265 is about 94.9589850650.

The spelling of 856265 in words is "eight hundred fifty-six thousand, two hundred sixty-five".