823543 has 8 divisors (see below), whose sum is σ = 960800. Its totient is φ = 705894.

The previous prime is 823541. The next prime is 823547. The reversal of 823543 is 345328.

It is a perfect power (a 7-th power), and thus also a powerful number.

It is not a de Polignac number, because 823543 - 2¹ = 823541 is a prime.

It is a Duffinian number.

823543 is a lucky number.

It is a nialpdrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117646 + ... + 117652.

It is an arithmetic number, because the mean of its divisors is an integer number (120100).

823543 is a Friedman number, since it can be written as (4+3)^(8-(3+2)/5), using all its digits and the basic arithmetic operations.

2⁸²³⁵⁴³ is an apocalyptic number.

823543 is a deficient number, since it is larger than the sum of its proper divisors (137257).

823543 is an frugal number, since it uses more digits than its factorization.

823543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49 (or 7 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 823543 is about 907.4926996952. The cubic root of 823543 is about 93.7336279558.

The spelling of 823543 in words is "eight hundred twenty-three thousand, five hundred forty-three".