422603641 has 2 divisors, whose sum is σ = 422603642. Its totient is φ = 422603640.

The previous prime is 422603611. The next prime is 422603647. The reversal of 422603641 is 146306224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 408201616 + 14402025 = 20204^2 + 3795^2 .

It is a cyclic number.

It is not a de Polignac number, because 422603641 - 2²⁷ = 288385913 is a prime.

It is not a weakly prime, because it can be changed into another prime (422603647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211301820 + 211301821.

It is an arithmetic number, because the mean of its divisors is an integer number (211301821).

Almost surely, 2^422603641 is an apocalyptic number.

It is an amenable number.

422603641 is a deficient number, since it is larger than the sum of its proper divisors (1).

422603641 is an equidigital number, since it uses as much as digits as its factorization.

422603641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 422603641 is about 20557.3257258818. The cubic root of 422603641 is about 750.4315389105.

Adding to 422603641 its reverse (146306224), we get a palindrome (568909865).

The spelling of 422603641 in words is "four hundred twenty-two million, six hundred three thousand, six hundred forty-one".