6697109 has 2 divisors, whose sum is σ = 6697110. Its totient is φ = 6697108.

The previous prime is 6697087. The next prime is 6697127. The reversal of 6697109 is 9017966.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6682225 + 14884 = 2585^2 + 122^2 .

It is a cyclic number.

It is not a de Polignac number, because 6697109 - 2⁸ = 6696853 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 (6697169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3348554 + 3348555.

It is an arithmetic number, because the mean of its divisors is an integer number (3348555).

Almost surely, 2^6697109 is an apocalyptic number.

It is an amenable number.

6697109 is a deficient number, since it is larger than the sum of its proper divisors (1).

6697109 is an equidigital number, since it uses as much as digits as its factorization.

6697109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 6697109 is about 2587.8773154846. The cubic root of 6697109 is about 188.4932441579.

The spelling of 6697109 in words is "six million, six hundred ninety-seven thousand, one hundred nine".