622669 has 2 divisors, whose sum is σ = 622670. Its totient is φ = 622668.

The previous prime is 622663. The next prime is 622709. The reversal of 622669 is 966226.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 580644 + 42025 = 762^2 + 205^2 .

It is a cyclic number.

It is not a de Polignac number, because 622669 - 2⁵ = 622637 is a prime.

It is a super-2 number, since 2×622669² = 775433367122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 622669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (622663) 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, 311334 + 311335.

It is an arithmetic number, because the mean of its divisors is an integer number (311335).

2⁶²²⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

622669 is a deficient number, since it is larger than the sum of its proper divisors (1).

622669 is an equidigital number, since it uses as much as digits as its factorization.

622669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 31.

The square root of 622669 is about 789.0937840333. The cubic root of 622669 is about 85.3923728122.

The spelling of 622669 in words is "six hundred twenty-two thousand, six hundred sixty-nine".