622604444 has 48 divisors (see below), whose sum is σ = 1377067776. Its totient is φ = 239241600.

The previous prime is 622604443. The next prime is 622604453. The reversal of 622604444 is 444406226.

It is a self number, because there is not a number n which added to its sum of digits gives 622604444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622604443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8639 + ... + 36329.

It is an arithmetic number, because the mean of its divisors is an integer number (28688912).

Almost surely, 2^622604444 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 622604444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (688533888).

622604444 is an abundant number, since it is smaller than the sum of its proper divisors (754463332).

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

622604444 is a wasteful number, since it uses less digits than its factorization.

622604444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27786 (or 27784 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

The square root of 622604444 is about 24952.0428822972. The cubic root of 622604444 is about 853.8942165591.

The spelling of 622604444 in words is "six hundred twenty-two million, six hundred four thousand, four hundred forty-four".