622748417 has 2 divisors, whose sum is σ = 622748418. Its totient is φ = 622748416.

The previous prime is 622748393. The next prime is 622748531. The reversal of 622748417 is 714847226.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 512162161 + 110586256 = 22631^2 + 10516^2 .

It is a cyclic number.

It is not a de Polignac number, because 622748417 - 2¹⁰ = 622747393 is a prime.

It is not a weakly prime, because it can be changed into another prime (622741417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311374208 + 311374209.

It is an arithmetic number, because the mean of its divisors is an integer number (311374209).

Almost surely, 2^622748417 is an apocalyptic number.

It is an amenable number.

622748417 is a deficient number, since it is larger than the sum of its proper divisors (1).

622748417 is an equidigital number, since it uses as much as digits as its factorization.

622748417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 150528, while the sum is 41.

The square root of 622748417 is about 24954.9277097731. The cubic root of 622748417 is about 853.9600305433.

The spelling of 622748417 in words is "six hundred twenty-two million, seven hundred forty-eight thousand, four hundred seventeen".