711691 has 2 divisors, whose sum is σ = 711692. Its totient is φ = 711690.

The previous prime is 711679. The next prime is 711701. The reversal of 711691 is 196117.

711691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (196117) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 711691 - 2⁷ = 711563 is a prime.

It is not a weakly prime, because it can be changed into another prime (714691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355845 + 355846.

It is an arithmetic number, because the mean of its divisors is an integer number (355846).

2⁷¹¹⁶⁹¹ is an apocalyptic number.

711691 is a deficient number, since it is larger than the sum of its proper divisors (1).

711691 is an equidigital number, since it uses as much as digits as its factorization.

711691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 378, while the sum is 25.

The square root of 711691 is about 843.6178044589. The cubic root of 711691 is about 89.2819823812.

The spelling of 711691 in words is "seven hundred eleven thousand, six hundred ninety-one".