26696513 has 2 divisors, whose sum is σ = 26696514. Its totient is φ = 26696512.

The previous prime is 26696503. The next prime is 26696521. The reversal of 26696513 is 31569662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23980609 + 2715904 = 4897^2 + 1648^2 .

It is a cyclic number.

It is not a de Polignac number, because 26696513 - 2¹² = 26692417 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (26696503) 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, 13348256 + 13348257.

It is an arithmetic number, because the mean of its divisors is an integer number (13348257).

Almost surely, 2^26696513 is an apocalyptic number.

It is an amenable number.

26696513 is a deficient number, since it is larger than the sum of its proper divisors (1).

26696513 is an equidigital number, since it uses as much as digits as its factorization.

26696513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 38.

The square root of 26696513 is about 5166.8668455845. The cubic root of 26696513 is about 298.8717361290.

The spelling of 26696513 in words is "twenty-six million, six hundred ninety-six thousand, five hundred thirteen".