26808863 has 4 divisors (see below), whose sum is σ = 26864400. Its totient is φ = 26753328.

The previous prime is 26808857. The next prime is 26808883. The reversal of 26808863 is 36880862.

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 26808863 - 2⁶ = 26808799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26808863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26808883) 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, 27038 + ... + 28011.

It is an arithmetic number, because the mean of its divisors is an integer number (6716100).

Almost surely, 2^26808863 is an apocalyptic number.

26808863 is a deficient number, since it is larger than the sum of its proper divisors (55537).

26808863 is an equidigital number, since it uses as much as digits as its factorization.

26808863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55536.

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 26808863 is about 5177.7275903624. The cubic root of 26808863 is about 299.2904081063.

The spelling of 26808863 in words is "twenty-six million, eight hundred eight thousand, eight hundred sixty-three".