798723161 has 2 divisors, whose sum is σ = 798723162. Its totient is φ = 798723160.

The previous prime is 798723127. The next prime is 798723187. The reversal of 798723161 is 161327897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 722265625 + 76457536 = 26875^2 + 8744^2 .

It is a cyclic number.

It is not a de Polignac number, because 798723161 - 2⁶ = 798723097 is a prime.

It is not a weakly prime, because it can be changed into another prime (798729161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399361580 + 399361581.

It is an arithmetic number, because the mean of its divisors is an integer number (399361581).

Almost surely, 2^798723161 is an apocalyptic number.

It is an amenable number.

798723161 is a deficient number, since it is larger than the sum of its proper divisors (1).

798723161 is an equidigital number, since it uses as much as digits as its factorization.

798723161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 44.

The square root of 798723161 is about 28261.6906960642. The cubic root of 798723161 is about 927.8236236000.

The spelling of 798723161 in words is "seven hundred ninety-eight million, seven hundred twenty-three thousand, one hundred sixty-one".