791865 has 12 divisors (see below), whose sum is σ = 1372644. Its totient is φ = 422304.

The previous prime is 791851. The next prime is 791887. The reversal of 791865 is 568197.

It can be written as a sum of positive squares in 2 ways, for example, as 121104 + 670761 = 348^2 + 819^2 .

It is not a de Polignac number, because 791865 - 2⁴ = 791849 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8754 + ... + 8843.

It is an arithmetic number, because the mean of its divisors is an integer number (114387).

2⁷⁹¹⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

791865 is a deficient number, since it is larger than the sum of its proper divisors (580779).

791865 is a wasteful number, since it uses less digits than its factorization.

791865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17608 (or 17605 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 791865 is about 889.8679677345. The cubic root of 791865 is about 92.5160429929.

The spelling of 791865 in words is "seven hundred ninety-one thousand, eight hundred sixty-five".