621105422 has 16 divisors (see below), whose sum is σ = 1065615360. Its totient is φ = 265972248.

The previous prime is 621105413. The next prime is 621105427. The reversal of 621105422 is 224501126.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621105427) by changing a digit.

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, 563 + ... + 35249.

It is an arithmetic number, because the mean of its divisors is an integer number (66600960).

Almost surely, 2^621105422 is an apocalyptic number.

621105422 is a deficient number, since it is larger than the sum of its proper divisors (444509938).

621105422 is a wasteful number, since it uses less digits than its factorization.

621105422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35975.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 621105422 is about 24921.9867185584. The cubic root of 621105422 is about 853.2083691859.

Adding to 621105422 its reverse (224501126), we get a palindrome (845606548).

The spelling of 621105422 in words is "six hundred twenty-one million, one hundred five thousand, four hundred twenty-two".