622889 has 2 divisors, whose sum is σ = 622890. Its totient is φ = 622888.

The previous prime is 622879. The next prime is 622901. The reversal of 622889 is 988226.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 469225 + 153664 = 685^2 + 392^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-622889 is a prime.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 6³ + 2¹⁵ + 8⁵ + 2¹⁹ + 8⁵ + 9² .

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (622849) 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, 311444 + 311445.

It is an arithmetic number, because the mean of its divisors is an integer number (311445).

2⁶²²⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

622889 is a deficient number, since it is larger than the sum of its proper divisors (1).

622889 is an equidigital number, since it uses as much as digits as its factorization.

622889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 35.

The square root of 622889 is about 789.2331721361. The cubic root of 622889 is about 85.4024285079.

The spelling of 622889 in words is "six hundred twenty-two thousand, eight hundred eighty-nine".