624220 has 36 divisors (see below), whose sum is σ = 1393560. Its totient is φ = 234784.

The previous prime is 624209. The next prime is 624229. The reversal of 624220 is 22426.

It is a junction number, because it is equal to n+sod(n) for n = 624194 and 624203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624229) by changing a digit.

624220 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 11 ways as a sum of consecutive naturals, for example, 10551 + ... + 10609.

It is an arithmetic number, because the mean of its divisors is an integer number (38710).

2⁶²⁴²²⁰ 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 624220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (696780).

624220 is an abundant number, since it is smaller than the sum of its proper divisors (769340).

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

624220 is a wasteful number, since it uses less digits than its factorization.

624220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 624220 is about 790.0759457166. The cubic root of 624220 is about 85.4632150278.

Adding to 624220 its reverse (22426), we get a palindrome (646646).

The spelling of 624220 in words is "six hundred twenty-four thousand, two hundred twenty".