171705713 has 2 divisors, whose sum is σ = 171705714. Its totient is φ = 171705712.

The previous prime is 171705689. The next prime is 171705817. The reversal of 171705713 is 317507171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143328784 + 28376929 = 11972^2 + 5327^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171705713 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 171705713.

It is not a weakly prime, because it can be changed into another prime (171705613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85852856 + 85852857.

It is an arithmetic number, because the mean of its divisors is an integer number (85852857).

Almost surely, 2^171705713 is an apocalyptic number.

It is an amenable number.

171705713 is a deficient number, since it is larger than the sum of its proper divisors (1).

171705713 is an equidigital number, since it uses as much as digits as its factorization.

171705713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5145, while the sum is 32.

The square root of 171705713 is about 13103.6526587055. The cubic root of 171705713 is about 555.8124216277.

The spelling of 171705713 in words is "one hundred seventy-one million, seven hundred five thousand, seven hundred thirteen".