26668907 has 2 divisors, whose sum is σ = 26668908. Its totient is φ = 26668906.

The previous prime is 26668883. The next prime is 26668909. The reversal of 26668907 is 70986662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26668907 - 2⁶ = 26668843 is a prime.

It is a super-2 number, since 2×26668907² = 1422461201149298, which contains 22 as substring.

Together with 26668909, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26668909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13334453 + 13334454.

It is an arithmetic number, because the mean of its divisors is an integer number (13334454).

Almost surely, 2^26668907 is an apocalyptic number.

26668907 is a deficient number, since it is larger than the sum of its proper divisors (1).

26668907 is an equidigital number, since it uses as much as digits as its factorization.

26668907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 26668907 is about 5164.1947097297. The cubic root of 26668907 is about 298.7686827366.

The spelling of 26668907 in words is "twenty-six million, six hundred sixty-eight thousand, nine hundred seven".