622717481 has 2 divisors, whose sum is σ = 622717482. Its totient is φ = 622717480.

The previous prime is 622717411. The next prime is 622717483. The reversal of 622717481 is 184717226.

622717481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 581243881 + 41473600 = 24109^2 + 6440^2 .

It is a cyclic number.

It is not a de Polignac number, because 622717481 - 2¹⁴ = 622701097 is a prime.

It is a super-2 number, since 2×622717481² = 775554122285970722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 622717483, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (622717483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311358740 + 311358741.

It is an arithmetic number, because the mean of its divisors is an integer number (311358741).

Almost surely, 2^622717481 is an apocalyptic number.

It is an amenable number.

622717481 is a deficient number, since it is larger than the sum of its proper divisors (1).

622717481 is an equidigital number, since it uses as much as digits as its factorization.

622717481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37632, while the sum is 38.

The square root of 622717481 is about 24954.3078645752. The cubic root of 622717481 is about 853.9458897098.

The spelling of 622717481 in words is "six hundred twenty-two million, seven hundred seventeen thousand, four hundred eighty-one".