26641297 has 2 divisors, whose sum is σ = 26641298. Its totient is φ = 26641296.

The previous prime is 26641289. The next prime is 26641309. The reversal of 26641297 is 79214662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18352656 + 8288641 = 4284^2 + 2879^2 .

It is a cyclic number.

It is not a de Polignac number, because 26641297 - 2³ = 26641289 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26641217) 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, 13320648 + 13320649.

It is an arithmetic number, because the mean of its divisors is an integer number (13320649).

Almost surely, 2^26641297 is an apocalyptic number.

It is an amenable number.

26641297 is a deficient number, since it is larger than the sum of its proper divisors (1).

26641297 is an equidigital number, since it uses as much as digits as its factorization.

26641297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 37.

The square root of 26641297 is about 5161.5208030192. The cubic root of 26641297 is about 298.6655432557.

The spelling of 26641297 in words is "twenty-six million, six hundred forty-one thousand, two hundred ninety-seven".