622559 has 4 divisors (see below), whose sum is σ = 711504. Its totient is φ = 533616.

The previous prime is 622549. The next prime is 622561. The reversal of 622559 is 955226.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 622559 - 2¹² = 618463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44462 + ... + 44475.

It is an arithmetic number, because the mean of its divisors is an integer number (177876).

2⁶²²⁵⁵⁹ is an apocalyptic number.

622559 is a deficient number, since it is larger than the sum of its proper divisors (88945).

622559 is an equidigital number, since it uses as much as digits as its factorization.

622559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88944.

The product of its digits is 5400, while the sum is 29.

The square root of 622559 is about 789.0240807479. The cubic root of 622559 is about 85.3873440761.

The spelling of 622559 in words is "six hundred twenty-two thousand, five hundred fifty-nine".