797218711 has 4 divisors (see below), whose sum is σ = 797276032. Its totient is φ = 797161392.

The previous prime is 797218693. The next prime is 797218717. The reversal of 797218711 is 117812797.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 117812797 = 193 ⋅610429.

It is a cyclic number.

It is not a de Polignac number, because 797218711 - 2¹¹ = 797216663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797218717) 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 in 3 ways as a sum of consecutive naturals, for example, 6955 + ... + 40531.

It is an arithmetic number, because the mean of its divisors is an integer number (199319008).

Almost surely, 2^797218711 is an apocalyptic number.

797218711 is a deficient number, since it is larger than the sum of its proper divisors (57321).

797218711 is a wasteful number, since it uses less digits than its factorization.

797218711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57320.

The product of its digits is 49392, while the sum is 43.

The square root of 797218711 is about 28235.0617318256. The cubic root of 797218711 is about 927.2407175991.

The spelling of 797218711 in words is "seven hundred ninety-seven million, two hundred eighteen thousand, seven hundred eleven".