26770561 has 2 divisors, whose sum is σ = 26770562. Its totient is φ = 26770560.

The previous prime is 26770537. The next prime is 26770607. The reversal of 26770561 is 16507762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23232400 + 3538161 = 4820^2 + 1881^2 .

It is a cyclic number.

It is not a de Polignac number, because 26770561 - 2¹¹ = 26768513 is a prime.

It is not a weakly prime, because it can be changed into another prime (26770501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13385280 + 13385281.

It is an arithmetic number, because the mean of its divisors is an integer number (13385281).

Almost surely, 2^26770561 is an apocalyptic number.

It is an amenable number.

26770561 is a deficient number, since it is larger than the sum of its proper divisors (1).

26770561 is an equidigital number, since it uses as much as digits as its factorization.

26770561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 26770561 is about 5174.0275414806. The cubic root of 26770561 is about 299.1478074443.

The spelling of 26770561 in words is "twenty-six million, seven hundred seventy thousand, five hundred sixty-one".