26642719 has 2 divisors, whose sum is σ = 26642720. Its totient is φ = 26642718.

The previous prime is 26642683. The next prime is 26642747. The reversal of 26642719 is 91724662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26642719 - 2⁹ = 26642207 is a prime.

It is a super-2 number, since 2×26642719² = 1419668951425922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26642779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13321359 + 13321360.

It is an arithmetic number, because the mean of its divisors is an integer number (13321360).

Almost surely, 2^26642719 is an apocalyptic number.

26642719 is a deficient number, since it is larger than the sum of its proper divisors (1).

26642719 is an equidigital number, since it uses as much as digits as its factorization.

26642719 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 26642719 is about 5161.6585512798. The cubic root of 26642719 is about 298.6708569966.

The spelling of 26642719 in words is "twenty-six million, six hundred forty-two thousand, seven hundred nineteen".