647822652793 has 2 divisors, whose sum is σ = 647822652794. Its totient is φ = 647822652792.

The previous prime is 647822652781. The next prime is 647822652847. The reversal of 647822652793 is 397256228746.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 343727756089 + 304094896704 = 586283^2 + 551448^2 .

It is a cyclic number.

It is not a de Polignac number, because 647822652793 - 2¹⁷ = 647822521721 is a prime.

It is not a weakly prime, because it can be changed into another prime (647822652713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323911326396 + 323911326397.

It is an arithmetic number, because the mean of its divisors is an integer number (323911326397).

Almost surely, 2^647822652793 is an apocalyptic number.

It is an amenable number.

647822652793 is a deficient number, since it is larger than the sum of its proper divisors (1).

647822652793 is an equidigital number, since it uses as much as digits as its factorization.

647822652793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60963840, while the sum is 61.

The spelling of 647822652793 in words is "six hundred forty-seven billion, eight hundred twenty-two million, six hundred fifty-two thousand, seven hundred ninety-three".