26816987 has 2 divisors, whose sum is σ = 26816988. Its totient is φ = 26816986.

The previous prime is 26816983. The next prime is 26817001. The reversal of 26816987 is 78961862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26816987 - 2² = 26816983 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26816981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13408493 + 13408494.

It is an arithmetic number, because the mean of its divisors is an integer number (13408494).

Almost surely, 2^26816987 is an apocalyptic number.

26816987 is a deficient number, since it is larger than the sum of its proper divisors (1).

26816987 is an equidigital number, since it uses as much as digits as its factorization.

26816987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 47.

The square root of 26816987 is about 5178.5120449797. The cubic root of 26816987 is about 299.3206367875.

The spelling of 26816987 in words is "twenty-six million, eight hundred sixteen thousand, nine hundred eighty-seven".