26706109 has 2 divisors, whose sum is σ = 26706110. Its totient is φ = 26706108.

The previous prime is 26706107. The next prime is 26706131. The reversal of 26706109 is 90160762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17724100 + 8982009 = 4210^2 + 2997^2 .

It is a cyclic number.

It is not a de Polignac number, because 26706109 - 2¹ = 26706107 is a prime.

Together with 26706107, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26706103) 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, 13353054 + 13353055.

It is an arithmetic number, because the mean of its divisors is an integer number (13353055).

Almost surely, 2^26706109 is an apocalyptic number.

It is an amenable number.

26706109 is a deficient number, since it is larger than the sum of its proper divisors (1).

26706109 is an equidigital number, since it uses as much as digits as its factorization.

26706109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 26706109 is about 5167.7953713358. The cubic root of 26706109 is about 298.9075414246.

The spelling of 26706109 in words is "twenty-six million, seven hundred six thousand, one hundred nine".