26855687 has 2 divisors, whose sum is σ = 26855688. Its totient is φ = 26855686.

The previous prime is 26855671. The next prime is 26855707. The reversal of 26855687 is 78655862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26855687 - 2⁴ = 26855671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26855617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13427843 + 13427844.

It is an arithmetic number, because the mean of its divisors is an integer number (13427844).

Almost surely, 2^26855687 is an apocalyptic number.

26855687 is a deficient number, since it is larger than the sum of its proper divisors (1).

26855687 is an equidigital number, since it uses as much as digits as its factorization.

26855687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 806400, while the sum is 47.

The square root of 26855687 is about 5182.2472924398. The cubic root of 26855687 is about 299.4645522952.

It can be divided in two parts, 268 and 55687, that added together give a palindrome (55955).

The spelling of 26855687 in words is "twenty-six million, eight hundred fifty-five thousand, six hundred eighty-seven".