791565 has 16 divisors (see below), whose sum is σ = 1280448. Its totient is φ = 417536.

The previous prime is 791563. The next prime is 791569. The reversal of 791565 is 565197.

It is a cyclic number.

It is not a de Polignac number, because 791565 - 2¹ = 791563 is a prime.

791565 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (791561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1462 + ... + 1928.

It is an arithmetic number, because the mean of its divisors is an integer number (80028).

2⁷⁹¹⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

791565 is a deficient number, since it is larger than the sum of its proper divisors (488883).

791565 is a wasteful number, since it uses less digits than its factorization.

791565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588.

The product of its digits is 9450, while the sum is 33.

The square root of 791565 is about 889.6993874338. The cubic root of 791565 is about 92.5043582071.

The spelling of 791565 in words is "seven hundred ninety-one thousand, five hundred sixty-five".