830785 has 4 divisors (see below), whose sum is σ = 996948. Its totient is φ = 664624.

The previous prime is 830777. The next prime is 830789. The reversal of 830785 is 587038.

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 410881 + 419904 = 641^2 + 648^2 .

It is a cyclic number.

It is not a de Polignac number, because 830785 - 2³ = 830777 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (830789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83074 + ... + 83083.

It is an arithmetic number, because the mean of its divisors is an integer number (249237).

2⁸³⁰⁷⁸⁵ is an apocalyptic number.

It is an amenable number.

830785 is a deficient number, since it is larger than the sum of its proper divisors (166163).

830785 is a wasteful number, since it uses less digits than its factorization.

830785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166162.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 830785 is about 911.4740808163. The cubic root of 830785 is about 94.0075820050.

The spelling of 830785 in words is "eight hundred thirty thousand, seven hundred eighty-five".