622636220 has 48 divisors (see below), whose sum is σ = 1444661568. Its totient is φ = 224209920.

The previous prime is 622636219. The next prime is 622636253. The reversal of 622636220 is 22636226.

It is a happy number.

622636220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31991 + ... + 47630.

It is an arithmetic number, because the mean of its divisors is an integer number (30097116).

Almost surely, 2^622636220 is an apocalyptic number.

It is an amenable number.

622636220 is an abundant number, since it is smaller than the sum of its proper divisors (822025348).

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

622636220 is a wasteful number, since it uses less digits than its factorization.

622636220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79670 (or 79668 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 622636220 is about 24952.6796156245. The cubic root of 622636220 is about 853.9087431076.

The spelling of 622636220 in words is "six hundred twenty-two million, six hundred thirty-six thousand, two hundred twenty".