622044 has 36 divisors (see below), whose sum is σ = 1618344. Its totient is φ = 201312.

The previous prime is 622043. The next prime is 622049. The reversal of 622044 is 440226.

622044 is a `hidden beast` number, since 622 + 0 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1099 + ... + 1565.

It is an arithmetic number, because the mean of its divisors is an integer number (44954).

2⁶²²⁰⁴⁴ 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 622044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (809172).

622044 is an abundant number, since it is smaller than the sum of its proper divisors (996300).

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

622044 is a wasteful number, since it uses less digits than its factorization.

622044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 622044 is about 788.6976607040. The cubic root of 622044 is about 85.3637925661.

The spelling of 622044 in words is "six hundred twenty-two thousand, forty-four".