822721037 has 2 divisors, whose sum is σ = 822721038. Its totient is φ = 822721036.

The previous prime is 822721019. The next prime is 822721043. The reversal of 822721037 is 730127228.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 436559236 + 386161801 = 20894^2 + 19651^2 .

It is a cyclic number.

It is not a de Polignac number, because 822721037 - 2⁸ = 822720781 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 822720994 and 822721012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (822721057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411360518 + 411360519.

It is an arithmetic number, because the mean of its divisors is an integer number (411360519).

Almost surely, 2^822721037 is an apocalyptic number.

It is an amenable number.

822721037 is a deficient number, since it is larger than the sum of its proper divisors (1).

822721037 is an equidigital number, since it uses as much as digits as its factorization.

822721037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 822721037 is about 28683.1141440395. The cubic root of 822721037 is about 937.0243297641.

The spelling of 822721037 in words is "eight hundred twenty-two million, seven hundred twenty-one thousand, thirty-seven".