422064641 has 2 divisors, whose sum is σ = 422064642. Its totient is φ = 422064640.

The previous prime is 422064607. The next prime is 422064647. The reversal of 422064641 is 146460224.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 392198416 + 29866225 = 19804^2 + 5465^2 .

It is a cyclic number.

It is not a de Polignac number, because 422064641 - 2¹⁰ = 422063617 is a prime.

It is a super-2 number, since 2×422064641² = 356277122364917762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (422064647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211032320 + 211032321.

It is an arithmetic number, because the mean of its divisors is an integer number (211032321).

Almost surely, 2^422064641 is an apocalyptic number.

It is an amenable number.

422064641 is a deficient number, since it is larger than the sum of its proper divisors (1).

422064641 is an equidigital number, since it uses as much as digits as its factorization.

422064641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 422064641 is about 20544.2118612518. The cubic root of 422064641 is about 750.1123630171.

The spelling of 422064641 in words is "four hundred twenty-two million, sixty-four thousand, six hundred forty-one".