622445842 has 8 divisors (see below), whose sum is σ = 934842636. Its totient is φ = 310831632.

The previous prime is 622445827. The next prime is 622445843. The reversal of 622445842 is 248544226.

It can be written as a sum of positive squares in 2 ways, for example, as 599319361 + 23126481 = 24481^2 + 4809^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (622445843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193653 + ... + 196840.

Almost surely, 2^622445842 is an apocalyptic number.

622445842 is a deficient number, since it is larger than the sum of its proper divisors (312396794).

622445842 is a wasteful number, since it uses less digits than its factorization.

622445842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391292.

The product of its digits is 122880, while the sum is 37.

The square root of 622445842 is about 24948.8645433014. The cubic root of 622445842 is about 853.8217035143.

It can be divided in two parts, 62244 and 5842, that added together give a palindrome (68086).

The spelling of 622445842 in words is "six hundred twenty-two million, four hundred forty-five thousand, eight hundred forty-two".