823345 has 8 divisors (see below), whose sum is σ = 1005120. Its totient is φ = 647280.

The previous prime is 823337. The next prime is 823349. The reversal of 823345 is 543328.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 823345 - 2³ = 823337 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1101 + ... + 1690.

It is an arithmetic number, because the mean of its divisors is an integer number (125640).

2⁸²³³⁴⁵ is an apocalyptic number.

It is an amenable number.

823345 is a deficient number, since it is larger than the sum of its proper divisors (181775).

823345 is a wasteful number, since it uses less digits than its factorization.

823345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2855.

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

The square root of 823345 is about 907.3836013506. The cubic root of 823345 is about 93.7261153969.

The spelling of 823345 in words is "eight hundred twenty-three thousand, three hundred forty-five".