622566 has 56 divisors (see below), whose sum is σ = 1626384. Its totient is φ = 174960.

The previous prime is 622561. The next prime is 622571. The reversal of 622566 is 665226.

It is an interprime number because it is at equal distance from previous prime (622561) and next prime (622571).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 622566.

It is not an unprimeable number, because it can be changed into a prime (622561) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 10176 + ... + 10236.

2⁶²²⁵⁶⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 622566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (813192).

622566 is an abundant number, since it is smaller than the sum of its proper divisors (1003818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

622566 is an equidigital number, since it uses as much as digits as its factorization.

622566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 73 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 622566 is about 789.0285165949. The cubic root of 622566 is about 85.3876641042.

It can be divided in two parts, 62 and 2566, that added together give a triangular number (2628 = T₇₂).

The spelling of 622566 in words is "six hundred twenty-two thousand, five hundred sixty-six".