805623 has 24 divisors (see below), whose sum is σ = 1335168. Its totient is φ = 423072.

The previous prime is 805589. The next prime is 805633. The reversal of 805623 is 326508.

It is not a de Polignac number, because 805623 - 2⁶ = 805559 is a prime.

805623 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 805593 and 805602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3436 + ... + 3662.

It is an arithmetic number, because the mean of its divisors is an integer number (55632).

2⁸⁰⁵⁶²³ is an apocalyptic number.

805623 is a deficient number, since it is larger than the sum of its proper divisors (529545).

805623 is a wasteful number, since it uses less digits than its factorization.

805623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 805623 is about 897.5650394261. The cubic root of 805623 is about 93.0487661920.

The spelling of 805623 in words is "eight hundred five thousand, six hundred twenty-three".