791791 has 24 divisors (see below), whose sum is σ = 1091664. Its totient is φ = 564480.

The previous prime is 791789. The next prime is 791797. The reversal of 791791 is 197197.

It is a happy number.

It is not a de Polignac number, because 791791 - 2¹ = 791789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (791797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6951 + ... + 7063.

It is an arithmetic number, because the mean of its divisors is an integer number (45486).

2⁷⁹¹⁷⁹¹ is an apocalyptic number.

791791 is a deficient number, since it is larger than the sum of its proper divisors (299873).

791791 is a wasteful number, since it uses less digits than its factorization.

791791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 144 counting only the distinct ones).

The product of its digits is 3969, while the sum is 34.

The square root of 791791 is about 889.8263875611. The cubic root of 791791 is about 92.5131610200.

It can be divided in two parts, 7917 and 91, that added together give a palindrome (8008).

The spelling of 791791 in words is "seven hundred ninety-one thousand, seven hundred ninety-one".