830865 has 32 divisors (see below), whose sum is σ = 1564416. Its totient is φ = 368640.

The previous prime is 830861. The next prime is 830873. The reversal of 830865 is 568038.

830865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 830865 - 2² = 830861 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (830861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4209 + ... + 4401.

It is an arithmetic number, because the mean of its divisors is an integer number (48888).

2⁸³⁰⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

830865 is a deficient number, since it is larger than the sum of its proper divisors (733551).

830865 is a wasteful number, since it uses less digits than its factorization.

830865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 830865 is about 911.5179647160. The cubic root of 830865 is about 94.0105993782.

The spelling of 830865 in words is "eight hundred thirty thousand, eight hundred sixty-five".