622823 has 4 divisors (see below), whose sum is σ = 626808. Its totient is φ = 618840.

The previous prime is 622813. The next prime is 622849. The reversal of 622823 is 328226.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 328226 = 2 ⋅164113.

It is a cyclic number.

It is not a de Polignac number, because 622823 - 2¹⁰ = 621799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622813) 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, 1748 + ... + 2073.

It is an arithmetic number, because the mean of its divisors is an integer number (156702).

2⁶²²⁸²³ is an apocalyptic number.

622823 is a deficient number, since it is larger than the sum of its proper divisors (3985).

622823 is a wasteful number, since it uses less digits than its factorization.

622823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3984.

The product of its digits is 1152, while the sum is 23.

The square root of 622823 is about 789.1913582902. The cubic root of 622823 is about 85.3994120478.

The spelling of 622823 in words is "six hundred twenty-two thousand, eight hundred twenty-three".