6697341257 has 2 divisors, whose sum is σ = 6697341258. Its totient is φ = 6697341256.

The previous prime is 6697341253. The next prime is 6697341269. The reversal of 6697341257 is 7521437966.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4836367936 + 1860973321 = 69544^2 + 43139^2 .

It is a cyclic number.

It is not a de Polignac number, because 6697341257 - 2² = 6697341253 is a prime.

It is not a weakly prime, because it can be changed into another prime (6697341253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3348670628 + 3348670629.

It is an arithmetic number, because the mean of its divisors is an integer number (3348670629).

Almost surely, 2^6697341257 is an apocalyptic number.

It is an amenable number.

6697341257 is a deficient number, since it is larger than the sum of its proper divisors (1).

6697341257 is an equidigital number, since it uses as much as digits as its factorization.

6697341257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1905120, while the sum is 50.

The square root of 6697341257 is about 81837.2852494509. The cubic root of 6697341257 is about 1884.9542312645.

The spelling of 6697341257 in words is "six billion, six hundred ninety-seven million, three hundred forty-one thousand, two hundred fifty-seven".