1668340711 has 2 divisors, whose sum is σ = 1668340712. Its totient is φ = 1668340710.

The previous prime is 1668340649. The next prime is 1668340727. The reversal of 1668340711 is 1170438661.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1668340711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1668340741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 834170355 + 834170356.

It is an arithmetic number, because the mean of its divisors is an integer number (834170356).

Almost surely, 2^1668340711 is an apocalyptic number.

1668340711 is a deficient number, since it is larger than the sum of its proper divisors (1).

1668340711 is an equidigital number, since it uses as much as digits as its factorization.

1668340711 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 1668340711 is about 40845.3266727052. The cubic root of 1668340711 is about 1186.0279284705.

The spelling of 1668340711 in words is "one billion, six hundred sixty-eight million, three hundred forty thousand, seven hundred eleven".