797081081 has 2 divisors, whose sum is σ = 797081082. Its totient is φ = 797081080.

The previous prime is 797081039. The next prime is 797081101. The reversal of 797081081 is 180180797.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 461605225 + 335475856 = 21485^2 + 18316^2 .

It is a cyclic number.

It is not a de Polignac number, because 797081081 - 2⁶ = 797081017 is a prime.

It is a super-2 number, since 2×797081081² = 1270676499376257122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (797081011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398540540 + 398540541.

It is an arithmetic number, because the mean of its divisors is an integer number (398540541).

Almost surely, 2^797081081 is an apocalyptic number.

It is an amenable number.

797081081 is a deficient number, since it is larger than the sum of its proper divisors (1).

797081081 is an equidigital number, since it uses as much as digits as its factorization.

797081081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 41.

The square root of 797081081 is about 28232.6244086518. The cubic root of 797081081 is about 927.1873556284.

The spelling of 797081081 in words is "seven hundred ninety-seven million, eighty-one thousand, eighty-one".