26208613 has 2 divisors, whose sum is σ = 26208614. Its totient is φ = 26208612.

The previous prime is 26208599. The next prime is 26208641. The reversal of 26208613 is 31680262.

It is an a-pointer prime, because the next prime (26208641) can be obtained adding 26208613 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22591009 + 3617604 = 4753^2 + 1902^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26208613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26208313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13104306 + 13104307.

It is an arithmetic number, because the mean of its divisors is an integer number (13104307).

Almost surely, 2^26208613 is an apocalyptic number.

It is an amenable number.

26208613 is a deficient number, since it is larger than the sum of its proper divisors (1).

26208613 is an equidigital number, since it uses as much as digits as its factorization.

26208613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 26208613 is about 5119.4348320884. The cubic root of 26208613 is about 297.0398243068.

Adding to 26208613 its reverse (31680262), we get a palindrome (57888875).

The spelling of 26208613 in words is "twenty-six million, two hundred eight thousand, six hundred thirteen".