622889669 has 2 divisors, whose sum is σ = 622889670. Its totient is φ = 622889668.

The previous prime is 622889653. The next prime is 622889677. The reversal of 622889669 is 966988226.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 328080769 + 294808900 = 18113^2 + 17170^2 .

It is a cyclic number.

It is not a de Polignac number, because 622889669 - 2⁴ = 622889653 is a prime.

It is a super-2 number, since 2×622889669² = 775983079493859122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (622889689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311444834 + 311444835.

It is an arithmetic number, because the mean of its divisors is an integer number (311444835).

Almost surely, 2^622889669 is an apocalyptic number.

It is an amenable number.

622889669 is a deficient number, since it is larger than the sum of its proper divisors (1).

622889669 is an equidigital number, since it uses as much as digits as its factorization.

622889669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4478976, while the sum is 56.

The square root of 622889669 is about 24957.7576917479. The cubic root of 622889669 is about 854.0245908270.

The spelling of 622889669 in words is "six hundred twenty-two million, eight hundred eighty-nine thousand, six hundred sixty-nine".