26534689 has 2 divisors, whose sum is σ = 26534690. Its totient is φ = 26534688.

The previous prime is 26534687. The next prime is 26534701. The reversal of 26534689 is 98643562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26368225 + 166464 = 5135^2 + 408^2 .

It is a cyclic number.

It is not a de Polignac number, because 26534689 - 2¹ = 26534687 is a prime.

Together with 26534687, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (26534687) 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, 13267344 + 13267345.

It is an arithmetic number, because the mean of its divisors is an integer number (13267345).

Almost surely, 2^26534689 is an apocalyptic number.

It is an amenable number.

26534689 is a deficient number, since it is larger than the sum of its proper divisors (1).

26534689 is an equidigital number, since it uses as much as digits as its factorization.

26534689 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 26534689 is about 5151.1832621253. The cubic root of 26534689 is about 298.2666299761.

The spelling of 26534689 in words is "twenty-six million, five hundred thirty-four thousand, six hundred eighty-nine".