622220 has 24 divisors (see below), whose sum is σ = 1333584. Its totient is φ = 243776.

The previous prime is 622189. The next prime is 622241. The reversal of 622220 is 22226.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 622195 and 622204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 767 + ... + 1353.

It is an arithmetic number, because the mean of its divisors is an integer number (55566).

2⁶²²²²⁰ is an apocalyptic number.

It is an amenable number.

622220 is an abundant number, since it is smaller than the sum of its proper divisors (711364).

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

622220 is a wasteful number, since it uses less digits than its factorization.

622220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649 (or 647 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 622220 is about 788.8092291549. The cubic root of 622220 is about 85.3718426991.

Adding to 622220 its reverse (22226), we get a palindrome (644446).

The spelling of 622220 in words is "six hundred twenty-two thousand, two hundred twenty".