26704109 has 2 divisors, whose sum is σ = 26704110. Its totient is φ = 26704108.

The previous prime is 26704091. The next prime is 26704129. The reversal of 26704109 is 90140762.

Together with previous prime (26704091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26234884 + 469225 = 5122^2 + 685^2 .

It is a cyclic number.

It is not a de Polignac number, because 26704109 - 2²⁴ = 9926893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26704129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13352054 + 13352055.

It is an arithmetic number, because the mean of its divisors is an integer number (13352055).

Almost surely, 2^26704109 is an apocalyptic number.

It is an amenable number.

26704109 is a deficient number, since it is larger than the sum of its proper divisors (1).

26704109 is an equidigital number, since it uses as much as digits as its factorization.

26704109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 26704109 is about 5167.6018615989. The cubic root of 26704109 is about 298.9000795862.

The spelling of 26704109 in words is "twenty-six million, seven hundred four thousand, one hundred nine".