26748581 has 2 divisors, whose sum is σ = 26748582. Its totient is φ = 26748580.

The previous prime is 26748577. The next prime is 26748583. The reversal of 26748581 is 18584762.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26357956 + 390625 = 5134^2 + 625^2 .

It is a cyclic number.

It is not a de Polignac number, because 26748581 - 2² = 26748577 is a prime.

It is a super-2 number, since 2×26748581² = 1430973171027122, which contains 22 as substring.

Together with 26748583, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26748583) 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, 13374290 + 13374291.

It is an arithmetic number, because the mean of its divisors is an integer number (13374291).

Almost surely, 2^26748581 is an apocalyptic number.

It is an amenable number.

26748581 is a deficient number, since it is larger than the sum of its proper divisors (1).

26748581 is an equidigital number, since it uses as much as digits as its factorization.

26748581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520, while the sum is 41.

The square root of 26748581 is about 5171.9030346672. The cubic root of 26748581 is about 299.0659131429.

The spelling of 26748581 in words is "twenty-six million, seven hundred forty-eight thousand, five hundred eighty-one".