26126609 has 2 divisors, whose sum is σ = 26126610. Its totient is φ = 26126608.

The previous prime is 26126563. The next prime is 26126629. The reversal of 26126609 is 90662162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19891600 + 6235009 = 4460^2 + 2497^2 .

It is a cyclic number.

It is not a de Polignac number, because 26126609 - 2²⁴ = 9349393 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (26126629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13063304 + 13063305.

It is an arithmetic number, because the mean of its divisors is an integer number (13063305).

Almost surely, 2^26126609 is an apocalyptic number.

It is an amenable number.

26126609 is a deficient number, since it is larger than the sum of its proper divisors (1).

26126609 is an equidigital number, since it uses as much as digits as its factorization.

26126609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 26126609 is about 5111.4194701668. The cubic root of 26126609 is about 296.7296984839.

The spelling of 26126609 in words is "twenty-six million, one hundred twenty-six thousand, six hundred nine".