26268565 has 4 divisors (see below), whose sum is σ = 31522284. Its totient is φ = 21014848.

The previous prime is 26268559. The next prime is 26268569. The reversal of 26268565 is 56586262.

It is a happy number.

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 19704721 + 6563844 = 4439^2 + 2562^2 .

It is a cyclic number.

It is not a de Polignac number, because 26268565 - 2⁵ = 26268533 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 (26268569) 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, 2626852 + ... + 2626861.

It is an arithmetic number, because the mean of its divisors is an integer number (7880571).

Almost surely, 2^26268565 is an apocalyptic number.

It is an amenable number.

26268565 is a deficient number, since it is larger than the sum of its proper divisors (5253719).

26268565 is an equidigital number, since it uses as much as digits as its factorization.

26268565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5253718.

The product of its digits is 172800, while the sum is 40.

The square root of 26268565 is about 5125.2868212423. The cubic root of 26268565 is about 297.2661439283.

The spelling of 26268565 in words is "twenty-six million, two hundred sixty-eight thousand, five hundred sixty-five".