622605220 has 12 divisors (see below), whose sum is σ = 1307471004. Its totient is φ = 249042080.

The previous prime is 622605197. The next prime is 622605227. The reversal of 622605220 is 22506226.

It can be written as a sum of positive squares in 2 ways, for example, as 222845184 + 399760036 = 14928^2 + 19994^2 .

It is not an unprimeable number, because it can be changed into a prime (622605227) 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 3 ways as a sum of consecutive naturals, for example, 15565111 + ... + 15565150.

It is an arithmetic number, because the mean of its divisors is an integer number (108955917).

Almost surely, 2^622605220 is an apocalyptic number.

It is an amenable number.

622605220 is an abundant number, since it is smaller than the sum of its proper divisors (684865784).

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

622605220 is a wasteful number, since it uses less digits than its factorization.

622605220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31130270 (or 31130268 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 622605220 is about 24952.0584321214. The cubic root of 622605220 is about 853.8945713171.

The spelling of 622605220 in words is "six hundred twenty-two million, six hundred five thousand, two hundred twenty".