622443 has 4 divisors (see below), whose sum is σ = 829928. Its totient is φ = 414960.

The previous prime is 622423. The next prime is 622477. The reversal of 622443 is 344226.

622443 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 622443 - 2⁸ = 622187 is a prime.

It is a D-number.

It is a Duffinian number.

622443 is strictly pandigital in base 7.

622443 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (622423) 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, 103738 + ... + 103743.

It is an arithmetic number, because the mean of its divisors is an integer number (207482).

2⁶²²⁴⁴³ is an apocalyptic number.

622443 is a deficient number, since it is larger than the sum of its proper divisors (207485).

622443 is a wasteful number, since it uses less digits than its factorization.

622443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207484.

The product of its digits is 1152, while the sum is 21.

The square root of 622443 is about 788.9505687938. The cubic root of 622443 is about 85.3820404036.

Adding to 622443 its reverse (344226), we get a palindrome (966669).

The spelling of 622443 in words is "six hundred twenty-two thousand, four hundred forty-three".