822694057 has 2 divisors, whose sum is σ = 822694058. Its totient is φ = 822694056.

The previous prime is 822694049. The next prime is 822694079. The reversal of 822694057 is 750496228.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 716686441 + 106007616 = 26771^2 + 10296^2 .

It is a cyclic number.

It is not a de Polignac number, because 822694057 - 2³ = 822694049 is a prime.

It is a super-2 number, since 2×822694057² = 1353651022846238498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (822695057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411347028 + 411347029.

It is an arithmetic number, because the mean of its divisors is an integer number (411347029).

Almost surely, 2^822694057 is an apocalyptic number.

It is an amenable number.

822694057 is a deficient number, since it is larger than the sum of its proper divisors (1).

822694057 is an equidigital number, since it uses as much as digits as its factorization.

822694057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 822694057 is about 28682.6438286292. The cubic root of 822694057 is about 937.0140868460.

The spelling of 822694057 in words is "eight hundred twenty-two million, six hundred ninety-four thousand, fifty-seven".