622748418 has 16 divisors (see below), whose sum is σ = 1245744576. Its totient is φ = 207541520.

The previous prime is 622748417. The next prime is 622748531. The reversal of 622748418 is 814847226.

It is a self number, because there is not a number n which added to its sum of digits gives 622748418.

It is not an unprimeable number, because it can be changed into a prime (622748417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45988 + ... + 57968.

It is an arithmetic number, because the mean of its divisors is an integer number (77859036).

Almost surely, 2^622748418 is an apocalyptic number.

622748418 is an abundant number, since it is smaller than the sum of its proper divisors (622996158).

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

622748418 is a wasteful number, since it uses less digits than its factorization.

622748418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20649.

The product of its digits is 172032, while the sum is 42.

The square root of 622748418 is about 24954.9277298092. The cubic root of 622748418 is about 853.9600310004.

It can be divided in two parts, 6227 and 48418, that added together give a palindrome (54645).

The spelling of 622748418 in words is "six hundred twenty-two million, seven hundred forty-eight thousand, four hundred eighteen".