26791 has 4 divisors (see below), whose sum is σ = 27232. Its totient is φ = 26352.

The previous prime is 26783. The next prime is 26801. The reversal of 26791 is 19762.

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

It is a cyclic number.

It is not a de Polignac number, because 26791 - 2³ = 26783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26701) 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, 111 + ... + 256.

It is an arithmetic number, because the mean of its divisors is an integer number (6808).

2²⁶⁷⁹¹ is an apocalyptic number.

26791 is the 95-th hex number.

26791 is a deficient number, since it is larger than the sum of its proper divisors (441).

26791 is an equidigital number, since it uses as much as digits as its factorization.

26791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440.

The product of its digits is 756, while the sum is 25.

The square root of 26791 is about 163.6795650043. The cubic root of 26791 is about 29.9223919990.

The spelling of 26791 in words is "twenty-six thousand, seven hundred ninety-one".