26648539 has 2 divisors, whose sum is σ = 26648540. Its totient is φ = 26648538.

The previous prime is 26648509. The next prime is 26648549. The reversal of 26648539 is 93584662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26648539 - 2⁷ = 26648411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26648495 and 26648504.

It is not a weakly prime, because it can be changed into another prime (26648509) 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, 13324269 + 13324270.

It is an arithmetic number, because the mean of its divisors is an integer number (13324270).

Almost surely, 2^26648539 is an apocalyptic number.

26648539 is a deficient number, since it is larger than the sum of its proper divisors (1).

26648539 is an equidigital number, since it uses as much as digits as its factorization.

26648539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 43.

The square root of 26648539 is about 5162.2222927728. Note that the first 4 decimals coincide. The cubic root of 26648539 is about 298.6926032484.

The spelling of 26648539 in words is "twenty-six million, six hundred forty-eight thousand, five hundred thirty-nine".