26905961 has 2 divisors, whose sum is σ = 26905962. Its totient is φ = 26905960.

The previous prime is 26905943. The next prime is 26905999. The reversal of 26905961 is 16950962.

It is an a-pointer prime, because the next prime (26905999) can be obtained adding 26905961 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15649936 + 11256025 = 3956^2 + 3355^2 .

It is a cyclic number.

It is not a de Polignac number, because 26905961 - 2¹⁰ = 26904937 is a prime.

It is not a weakly prime, because it can be changed into another prime (26905261) 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, 13452980 + 13452981.

It is an arithmetic number, because the mean of its divisors is an integer number (13452981).

Almost surely, 2^26905961 is an apocalyptic number.

It is an amenable number.

26905961 is a deficient number, since it is larger than the sum of its proper divisors (1).

26905961 is an equidigital number, since it uses as much as digits as its factorization.

26905961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 26905961 is about 5187.0956227932. The cubic root of 26905961 is about 299.6513022641.

The spelling of 26905961 in words is "twenty-six million, nine hundred five thousand, nine hundred sixty-one".