622619 has 2 divisors, whose sum is σ = 622620. Its totient is φ = 622618.

The previous prime is 622613. The next prime is 622621. The reversal of 622619 is 916226.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 622619 - 2⁴ = 622603 is a prime.

It is a super-2 number, since 2×622619² = 775308838322, which contains 22 as substring.

Together with 622621, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (622613) 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, 311309 + 311310.

It is an arithmetic number, because the mean of its divisors is an integer number (311310).

2⁶²²⁶¹⁹ is an apocalyptic number.

622619 is a deficient number, since it is larger than the sum of its proper divisors (1).

622619 is an equidigital number, since it uses as much as digits as its factorization.

622619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 26.

The square root of 622619 is about 789.0621014850. The cubic root of 622619 is about 85.3900870965.

The spelling of 622619 in words is "six hundred twenty-two thousand, six hundred nineteen".