822104641 has 2 divisors, whose sum is σ = 822104642. Its totient is φ = 822104640.

The previous prime is 822104639. The next prime is 822104671. The reversal of 822104641 is 146401228.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 822026241 + 78400 = 28671^2 + 280^2 .

It is a cyclic number.

It is not a de Polignac number, because 822104641 - 2¹ = 822104639 is a prime.

Together with 822104639, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (822104671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411052320 + 411052321.

It is an arithmetic number, because the mean of its divisors is an integer number (411052321).

Almost surely, 2^822104641 is an apocalyptic number.

It is an amenable number.

822104641 is a deficient number, since it is larger than the sum of its proper divisors (1).

822104641 is an equidigital number, since it uses as much as digits as its factorization.

822104641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 822104641 is about 28672.3672025872. The cubic root of 822104641 is about 936.7902600019.

Adding to 822104641 its reverse (146401228), we get a palindrome (968505869).

The spelling of 822104641 in words is "eight hundred twenty-two million, one hundred four thousand, six hundred forty-one".