622813 has 2 divisors, whose sum is σ = 622814. Its totient is φ = 622812.

The previous prime is 622793. The next prime is 622849. The reversal of 622813 is 318226.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 338724 + 284089 = 582^2 + 533^2 .

It is a cyclic number.

It is not a de Polignac number, because 622813 - 2⁵ = 622781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (622313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311406 + 311407.

It is an arithmetic number, because the mean of its divisors is an integer number (311407).

2⁶²²⁸¹³ is an apocalyptic number.

It is an amenable number.

622813 is a deficient number, since it is larger than the sum of its proper divisors (1).

622813 is an equidigital number, since it uses as much as digits as its factorization.

622813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 22.

The square root of 622813 is about 789.1850226658. The cubic root of 622813 is about 85.3989549898.

It can be divided in two parts, 6228 and 13, that added together give a square (6241 = 79²).

The spelling of 622813 in words is "six hundred twenty-two thousand, eight hundred thirteen".