622544 has 40 divisors (see below), whose sum is σ = 1348872. Its totient is φ = 276480.

The previous prime is 622529. The next prime is 622547. The reversal of 622544 is 445226.

It can be written as a sum of positive squares in 4 ways, for example, as 1600 + 620944 = 40^2 + 788^2 .

It is a super-2 number, since 2×622544² = 775122063872, which contains 22 as substring.

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 622544.

It is not an unprimeable number, because it can be changed into a prime (622547) by changing a digit.

622544 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8492 + ... + 8564.

2⁶²²⁵⁴⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 622544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (674436).

622544 is an abundant number, since it is smaller than the sum of its proper divisors (726328).

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

622544 is a wasteful number, since it uses less digits than its factorization.

622544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 129 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 622544 is about 789.0145752773. The cubic root of 622544 is about 85.3866582935.

Subtracting from 622544 its sum of digits (23), we obtain a square (622521 = 789²).

The spelling of 622544 in words is "six hundred twenty-two thousand, five hundred forty-four".