2698109 has 2 divisors, whose sum is σ = 2698110. Its totient is φ = 2698108.

The previous prime is 2698103. The next prime is 2698159. The reversal of 2698109 is 9018962.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2656900 + 41209 = 1630^2 + 203^2 .

It is a cyclic number.

It is not a de Polignac number, because 2698109 - 2⁸ = 2697853 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2698103) 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, 1349054 + 1349055.

It is an arithmetic number, because the mean of its divisors is an integer number (1349055).

2^2698109 is an apocalyptic number.

It is an amenable number.

2698109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2698109 is an equidigital number, since it uses as much as digits as its factorization.

2698109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 2698109 is about 1642.5921587540. The cubic root of 2698109 is about 139.2151491032.

The spelling of 2698109 in words is "two million, six hundred ninety-eight thousand, one hundred nine".