6691193 has 2 divisors, whose sum is σ = 6691194. Its totient is φ = 6691192.

The previous prime is 6691177. The next prime is 6691207. The reversal of 6691193 is 3911966.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5822569 + 868624 = 2413^2 + 932^2 .

It is a cyclic number.

It is not a de Polignac number, because 6691193 - 2⁴ = 6691177 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (6691163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3345596 + 3345597.

It is an arithmetic number, because the mean of its divisors is an integer number (3345597).

Almost surely, 2^6691193 is an apocalyptic number.

It is an amenable number.

6691193 is a deficient number, since it is larger than the sum of its proper divisors (1).

6691193 is an equidigital number, since it uses as much as digits as its factorization.

6691193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 35.

The square root of 6691193 is about 2586.7340412188. The cubic root of 6691193 is about 188.4377249506.

The spelling of 6691193 in words is "six million, six hundred ninety-one thousand, one hundred ninety-three".