422075681 has 2 divisors, whose sum is σ = 422075682. Its totient is φ = 422075680.

The previous prime is 422075639. The next prime is 422075683. The reversal of 422075681 is 186570224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 400360081 + 21715600 = 20009^2 + 4660^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422075681 is a prime.

It is a super-2 number, since 2×422075681² = 356295760983227522, which contains 22 as substring.

Together with 422075683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (422075683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211037840 + 211037841.

It is an arithmetic number, because the mean of its divisors is an integer number (211037841).

Almost surely, 2^422075681 is an apocalyptic number.

It is an amenable number.

422075681 is a deficient number, since it is larger than the sum of its proper divisors (1).

422075681 is an equidigital number, since it uses as much as digits as its factorization.

422075681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 422075681 is about 20544.4805483127. The cubic root of 422075681 is about 750.1189032224.

The spelling of 422075681 in words is "four hundred twenty-two million, seventy-five thousand, six hundred eighty-one".