26865361 has 2 divisors, whose sum is σ = 26865362. Its totient is φ = 26865360.

The previous prime is 26865359. The next prime is 26865379. The reversal of 26865361 is 16356862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24403600 + 2461761 = 4940^2 + 1569^2 .

It is a cyclic number.

It is not a de Polignac number, because 26865361 - 2¹ = 26865359 is a prime.

Together with 26865359, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 26865361.

It is not a weakly prime, because it can be changed into another prime (26865331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13432680 + 13432681.

It is an arithmetic number, because the mean of its divisors is an integer number (13432681).

Almost surely, 2^26865361 is an apocalyptic number.

It is an amenable number.

26865361 is a deficient number, since it is larger than the sum of its proper divisors (1).

26865361 is an equidigital number, since it uses as much as digits as its factorization.

26865361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The square root of 26865361 is about 5183.1805872456. The cubic root of 26865361 is about 299.5005058506.

The spelling of 26865361 in words is "twenty-six million, eight hundred sixty-five thousand, three hundred sixty-one".