26856601 has 2 divisors, whose sum is σ = 26856602. Its totient is φ = 26856600.

The previous prime is 26856539. The next prime is 26856611. The reversal of 26856601 is 10665862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20611600 + 6245001 = 4540^2 + 2499^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26856601 is a prime.

It is not a weakly prime, because it can be changed into another prime (26856611) 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, 13428300 + 13428301.

It is an arithmetic number, because the mean of its divisors is an integer number (13428301).

Almost surely, 2^26856601 is an apocalyptic number.

It is an amenable number.

26856601 is a deficient number, since it is larger than the sum of its proper divisors (1).

26856601 is an equidigital number, since it uses as much as digits as its factorization.

26856601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 26856601 is about 5182.3354773693. The cubic root of 26856601 is about 299.4679495582.

The spelling of 26856601 in words is "twenty-six million, eight hundred fifty-six thousand, six hundred one".