622663 has 2 divisors, whose sum is σ = 622664. Its totient is φ = 622662.

The previous prime is 622639. The next prime is 622669. The reversal of 622663 is 366226.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 622663 - 2⁹ = 622151 is a prime.

622663 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (622669) 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 as a sum of consecutive naturals, namely, 311331 + 311332.

It is an arithmetic number, because the mean of its divisors is an integer number (311332).

2⁶²²⁶⁶³ is an apocalyptic number.

622663 is a deficient number, since it is larger than the sum of its proper divisors (1).

622663 is an equidigital number, since it uses as much as digits as its factorization.

622663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 25.

The square root of 622663 is about 789.0899821947. The cubic root of 622663 is about 85.3920985327.

Adding to 622663 its reverse (366226), we get a palindrome (988889).

The spelling of 622663 in words is "six hundred twenty-two thousand, six hundred sixty-three".