26648579 has 2 divisors, whose sum is σ = 26648580. Its totient is φ = 26648578.

The previous prime is 26648549. The next prime is 26648581. The reversal of 26648579 is 97584662.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26648579 is a prime.

Together with 26648581, 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 (26648509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13324289 + 13324290.

It is an arithmetic number, because the mean of its divisors is an integer number (13324290).

Almost surely, 2^26648579 is an apocalyptic number.

26648579 is a deficient number, since it is larger than the sum of its proper divisors (1).

26648579 is an equidigital number, since it uses as much as digits as its factorization.

26648579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 47.

The square root of 26648579 is about 5162.2261670717. The cubic root of 26648579 is about 298.6927526962.

The spelling of 26648579 in words is "twenty-six million, six hundred forty-eight thousand, five hundred seventy-nine".