26280647 has 2 divisors, whose sum is σ = 26280648. Its totient is φ = 26280646.

The previous prime is 26280637. The next prime is 26280649. The reversal of 26280647 is 74608262.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26280647 - 2¹⁰ = 26279623 is a prime.

Together with 26280649, 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 (26280649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13140323 + 13140324.

It is an arithmetic number, because the mean of its divisors is an integer number (13140324).

Almost surely, 2^26280647 is an apocalyptic number.

26280647 is a deficient number, since it is larger than the sum of its proper divisors (1).

26280647 is an equidigital number, since it uses as much as digits as its factorization.

26280647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 26280647 is about 5126.4653514873. The cubic root of 26280647 is about 297.3117119428.

The spelling of 26280647 in words is "twenty-six million, two hundred eighty thousand, six hundred forty-seven".