845023 has 4 divisors (see below), whose sum is σ = 855288. Its totient is φ = 834760.

The previous prime is 845021. The next prime is 845027. The reversal of 845023 is 320548.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 845023 - 2¹ = 845021 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

845023 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 844985 and 845003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5008 + ... + 5173.

It is an arithmetic number, because the mean of its divisors is an integer number (213822).

2⁸⁴⁵⁰²³ is an apocalyptic number.

845023 is a gapful number since it is divisible by the number (83) formed by its first and last digit.

845023 is a deficient number, since it is larger than the sum of its proper divisors (10265).

845023 is a wasteful number, since it uses less digits than its factorization.

845023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10264.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 845023 is about 919.2513258081. The cubic root of 845023 is about 94.5415772179.

The spelling of 845023 in words is "eight hundred forty-five thousand, twenty-three".