816833 has 4 divisors (see below), whose sum is σ = 864900. Its totient is φ = 768768.

The previous prime is 816821. The next prime is 816839. The reversal of 816833 is 338618.

816833 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 322624 + 494209 = 568^2 + 703^2 .

It is a cyclic number.

It is not a de Polignac number, because 816833 - 2⁴ = 816817 is a prime.

It is a super-2 number, since 2×816833² = 1334432299778, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 816796 and 816805.

It is not an unprimeable number, because it can be changed into a prime (816839) 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, 24008 + ... + 24041.

It is an arithmetic number, because the mean of its divisors is an integer number (216225).

2⁸¹⁶⁸³³ is an apocalyptic number.

It is an amenable number.

816833 is a deficient number, since it is larger than the sum of its proper divisors (48067).

816833 is a wasteful number, since it uses less digits than its factorization.

816833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48066.

The product of its digits is 3456, while the sum is 29.

The square root of 816833 is about 903.7881388910. The cubic root of 816833 is about 93.4783615459.

The spelling of 816833 in words is "eight hundred sixteen thousand, eight hundred thirty-three".