622474861 has 2 divisors, whose sum is σ = 622474862. Its totient is φ = 622474860.

The previous prime is 622474859. The next prime is 622474883. The reversal of 622474861 is 168474226.

It is a happy number.

622474861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 576912361 + 45562500 = 24019^2 + 6750^2 .

It is a cyclic number.

It is not a de Polignac number, because 622474861 - 2¹ = 622474859 is a prime.

Together with 622474859, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (622474661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311237430 + 311237431.

It is an arithmetic number, because the mean of its divisors is an integer number (311237431).

Almost surely, 2^622474861 is an apocalyptic number.

It is an amenable number.

622474861 is a deficient number, since it is larger than the sum of its proper divisors (1).

622474861 is an equidigital number, since it uses as much as digits as its factorization.

622474861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 40.

The square root of 622474861 is about 24949.4461060762. The cubic root of 622474861 is about 853.8349719602.

The spelling of 622474861 in words is "six hundred twenty-two million, four hundred seventy-four thousand, eight hundred sixty-one".