26816863 has 2 divisors, whose sum is σ = 26816864. Its totient is φ = 26816862.

The previous prime is 26816861. The next prime is 26816893. The reversal of 26816863 is 36861862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26816863 - 2¹ = 26816861 is a prime.

Together with 26816861, it forms a pair of twin primes.

It is the 5179-th Hogben number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26816861) by changing a digit.

It is a nontrivial repunit in base 5178.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13408431 + 13408432.

It is an arithmetic number, because the mean of its divisors is an integer number (13408432).

Almost surely, 2^26816863 is an apocalyptic number.

26816863 is a deficient number, since it is larger than the sum of its proper divisors (1).

26816863 is an equidigital number, since it uses as much as digits as its factorization.

26816863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 40.

The square root of 26816863 is about 5178.5000724148. The cubic root of 26816863 is about 299.3201754404.

The spelling of 26816863 in words is "twenty-six million, eight hundred sixteen thousand, eight hundred sixty-three".