622424 has 24 divisors (see below), whose sum is σ = 1284780. Its totient is φ = 282480.

The previous prime is 622423. The next prime is 622477. The reversal of 622424 is 424226.

It is a junction number, because it is equal to n+sod(n) for n = 622396 and 622405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 647 + ... + 1289.

2⁶²²⁴²⁴ 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 622424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (642390).

622424 is an abundant number, since it is smaller than the sum of its proper divisors (662356).

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

622424 is a wasteful number, since it uses less digits than its factorization.

622424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671 (or 656 counting only the distinct ones).

The product of its digits is 768, while the sum is 20.

The square root of 622424 is about 788.9385273898. The cubic root of 622424 is about 85.3811716358.

The spelling of 622424 in words is "six hundred twenty-two thousand, four hundred twenty-four".