622121613 has 16 divisors (see below), whose sum is σ = 886070016. Its totient is φ = 386892800.

The previous prime is 622121597. The next prime is 622121627. The reversal of 622121613 is 316121226.

It is not a de Polignac number, because 622121613 - 2⁴ = 622121597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622121683) 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 15 ways as a sum of consecutive naturals, for example, 48213 + ... + 59738.

It is an arithmetic number, because the mean of its divisors is an integer number (55379376).

Almost surely, 2^622121613 is an apocalyptic number.

It is an amenable number.

622121613 is a deficient number, since it is larger than the sum of its proper divisors (263948403).

622121613 is a wasteful number, since it uses less digits than its factorization.

622121613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108084.

The product of its digits is 864, while the sum is 24.

The square root of 622121613 is about 24942.3658260398. The cubic root of 622121613 is about 853.6734272470.

Adding to 622121613 its reverse (316121226), we get a palindrome (938242839).

The spelling of 622121613 in words is "six hundred twenty-two million, one hundred twenty-one thousand, six hundred thirteen".