26806805 has 4 divisors (see below), whose sum is σ = 32168172. Its totient is φ = 21445440.

The previous prime is 26806789. The next prime is 26806837. The reversal of 26806805 is 50860862.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9284209 + 17522596 = 3047^2 + 4186^2 .

It is not a de Polignac number, because 26806805 - 2⁴ = 26806789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2680676 + ... + 2680685.

It is an arithmetic number, because the mean of its divisors is an integer number (8042043).

Almost surely, 2^26806805 is an apocalyptic number.

It is an amenable number.

26806805 is a deficient number, since it is larger than the sum of its proper divisors (5361367).

26806805 is an equidigital number, since it uses as much as digits as its factorization.

26806805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5361366.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 26806805 is about 5177.5288507163. The cubic root of 26806805 is about 299.2827495020.

The spelling of 26806805 in words is "twenty-six million, eight hundred six thousand, eight hundred five".