835813 has 4 divisors (see below), whose sum is σ = 911808. Its totient is φ = 759820.

The previous prime is 835811. The next prime is 835817. The reversal of 835813 is 318538.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 835813 - 2¹ = 835811 is a prime.

It is a Duffinian number.

835813 is a lucky number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (835811) 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, 37981 + ... + 38002.

It is an arithmetic number, because the mean of its divisors is an integer number (227952).

2⁸³⁵⁸¹³ is an apocalyptic number.

It is an amenable number.

835813 is a deficient number, since it is larger than the sum of its proper divisors (75995).

835813 is a wasteful number, since it uses less digits than its factorization.

835813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75994.

The product of its digits is 2880, while the sum is 28.

The square root of 835813 is about 914.2280897019. The cubic root of 835813 is about 94.1968486887.

The spelling of 835813 in words is "eight hundred thirty-five thousand, eight hundred thirteen".