26569013 has 2 divisors, whose sum is σ = 26569014. Its totient is φ = 26569012.

The previous prime is 26569003. The next prime is 26569019. The reversal of 26569013 is 31096562.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20775364 + 5793649 = 4558^2 + 2407^2 .

It is a cyclic number.

It is not a de Polignac number, because 26569013 - 2¹⁸ = 26306869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26569019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13284506 + 13284507.

It is an arithmetic number, because the mean of its divisors is an integer number (13284507).

Almost surely, 2^26569013 is an apocalyptic number.

It is an amenable number.

26569013 is a deficient number, since it is larger than the sum of its proper divisors (1).

26569013 is an equidigital number, since it uses as much as digits as its factorization.

26569013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 26569013 is about 5154.5138471053. The cubic root of 26569013 is about 298.3951823608.

The spelling of 26569013 in words is "twenty-six million, five hundred sixty-nine thousand, thirteen".