622404313 has 4 divisors (see below), whose sum is σ = 637584948. Its totient is φ = 607223680.

The previous prime is 622404257. The next prime is 622404353. The reversal of 622404313 is 313404226.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 337199769 + 285204544 = 18363^2 + 16888^2 .

It is a cyclic number.

It is not a de Polignac number, because 622404313 - 2²⁹ = 85533401 is a prime.

It is a super-3 number, since 3×622404313³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (622404353) 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 3 ways as a sum of consecutive naturals, for example, 7590256 + ... + 7590337.

It is an arithmetic number, because the mean of its divisors is an integer number (159396237).

Almost surely, 2^622404313 is an apocalyptic number.

It is an amenable number.

622404313 is a deficient number, since it is larger than the sum of its proper divisors (15180635).

622404313 is a wasteful number, since it uses less digits than its factorization.

622404313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15180634.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 622404313 is about 24948.0322470531. The cubic root of 622404313 is about 853.8027143655.

Adding to 622404313 its reverse (313404226), we get a palindrome (935808539).

The spelling of 622404313 in words is "six hundred twenty-two million, four hundred four thousand, three hundred thirteen".