422630641 has 2 divisors, whose sum is σ = 422630642. Its totient is φ = 422630640.

The previous prime is 422630609. The next prime is 422630647. The reversal of 422630641 is 146036224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 294465600 + 128165041 = 17160^2 + 11321^2 .

It is a cyclic number.

It is not a de Polignac number, because 422630641 - 2⁵ = 422630609 is a prime.

It is not a weakly prime, because it can be changed into another prime (422630647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211315320 + 211315321.

It is an arithmetic number, because the mean of its divisors is an integer number (211315321).

Almost surely, 2^422630641 is an apocalyptic number.

It is an amenable number.

422630641 is a deficient number, since it is larger than the sum of its proper divisors (1).

422630641 is an equidigital number, since it uses as much as digits as its factorization.

422630641 is an evil number, because the sum of its binary digits is even.

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

The square root of 422630641 is about 20557.9824155971. The cubic root of 422630641 is about 750.4475201737.

Adding to 422630641 its reverse (146036224), we get a palindrome (568666865).

The spelling of 422630641 in words is "four hundred twenty-two million, six hundred thirty thousand, six hundred forty-one".