791717197 has 4 divisors (see below), whose sum is σ = 819017820. Its totient is φ = 764416576.

The previous prime is 791717191. The next prime is 791717239.

791717197 is nontrivially palindromic in base 10.

791717197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 382828356 + 408888841 = 19566^2 + 20221^2 .

It is a cyclic number.

It is not a de Polignac number, because 791717197 - 2³ = 791717189 is a prime.

It is a super-2 number, since 2×791717197² = 1253632240051073618, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 791717197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (791717191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13650268 + ... + 13650325.

It is an arithmetic number, because the mean of its divisors is an integer number (204754455).

Almost surely, 2^791717197 is an apocalyptic number.

It is an amenable number.

791717197 is a deficient number, since it is larger than the sum of its proper divisors (27300623).

791717197 is a wasteful number, since it uses less digits than its factorization.

791717197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27300622.

The product of its digits is 194481, while the sum is 49.

The square root of 791717197 is about 28137.4696268161. The cubic root of 791717197 is about 925.1028654048.

It can be divided in two parts, 79171 and 7197, that added together give a palindrome (86368).

The spelling of 791717197 in words is "seven hundred ninety-one million, seven hundred seventeen thousand, one hundred ninety-seven".