26865269 has 2 divisors, whose sum is σ = 26865270. Its totient is φ = 26865268.

The previous prime is 26865257. The next prime is 26865271. The reversal of 26865269 is 96256862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26142769 + 722500 = 5113^2 + 850^2 .

It is a cyclic number.

It is not a de Polignac number, because 26865269 - 2¹⁶ = 26799733 is a prime.

It is a super-2 number, since 2×26865269² = 1443485356884722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 26865271, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26865469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13432634 + 13432635.

It is an arithmetic number, because the mean of its divisors is an integer number (13432635).

Almost surely, 2^26865269 is an apocalyptic number.

It is an amenable number.

26865269 is a deficient number, since it is larger than the sum of its proper divisors (1).

26865269 is an equidigital number, since it uses as much as digits as its factorization.

26865269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 44.

The square root of 26865269 is about 5183.1717123784. The cubic root of 26865269 is about 299.5001639720.

The spelling of 26865269 in words is "twenty-six million, eight hundred sixty-five thousand, two hundred sixty-nine".