26560649 has 2 divisors, whose sum is σ = 26560650. Its totient is φ = 26560648.

The previous prime is 26560631. The next prime is 26560657. The reversal of 26560649 is 94606562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21529600 + 5031049 = 4640^2 + 2243^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26560649 is a prime.

It is not a weakly prime, because it can be changed into another prime (26560619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13280324 + 13280325.

It is an arithmetic number, because the mean of its divisors is an integer number (13280325).

Almost surely, 2^26560649 is an apocalyptic number.

It is an amenable number.

26560649 is a deficient number, since it is larger than the sum of its proper divisors (1).

26560649 is an equidigital number, since it uses as much as digits as its factorization.

26560649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 26560649 is about 5153.7024555168. The cubic root of 26560649 is about 298.3638671937.

The spelling of 26560649 in words is "twenty-six million, five hundred sixty thousand, six hundred forty-nine".