26565949 has 2 divisors, whose sum is σ = 26565950. Its totient is φ = 26565948.

The previous prime is 26565947. The next prime is 26565953. The reversal of 26565949 is 94956562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22231225 + 4334724 = 4715^2 + 2082^2 .

It is a cyclic number.

It is not a de Polignac number, because 26565949 - 2¹ = 26565947 is a prime.

Together with 26565947, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 26565899 and 26565908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26565947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13282974 + 13282975.

It is an arithmetic number, because the mean of its divisors is an integer number (13282975).

Almost surely, 2^26565949 is an apocalyptic number.

It is an amenable number.

26565949 is a deficient number, since it is larger than the sum of its proper divisors (1).

26565949 is an equidigital number, since it uses as much as digits as its factorization.

26565949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 46.

The square root of 26565949 is about 5154.2166233095. The cubic root of 26565949 is about 298.3837113791.

The spelling of 26565949 in words is "twenty-six million, five hundred sixty-five thousand, nine hundred forty-nine".