791871 has 4 divisors (see below), whose sum is σ = 1055832. Its totient is φ = 527912.

The previous prime is 791851. The next prime is 791887. The reversal of 791871 is 178197.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 178197 = 3 ⋅59399.

It is a cyclic number.

It is not a de Polignac number, because 791871 - 2¹¹ = 789823 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (791801) 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 3 ways as a sum of consecutive naturals, for example, 131976 + ... + 131981.

It is an arithmetic number, because the mean of its divisors is an integer number (263958).

2⁷⁹¹⁸⁷¹ is an apocalyptic number.

791871 is a deficient number, since it is larger than the sum of its proper divisors (263961).

791871 is a wasteful number, since it uses less digits than its factorization.

791871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263960.

The product of its digits is 3528, while the sum is 33.

The square root of 791871 is about 889.8713390148. The cubic root of 791871 is about 92.5162766585.

The spelling of 791871 in words is "seven hundred ninety-one thousand, eight hundred seventy-one".