716861 has 2 divisors, whose sum is σ = 716862. Its totient is φ = 716860.

The previous prime is 716857. The next prime is 716869. The reversal of 716861 is 168617.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 481636 + 235225 = 694^2 + 485^2 .

It is an emirp because it is prime and its reverse (168617) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 716861 - 2² = 716857 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 716861.

It is not a weakly prime, because it can be changed into another prime (716869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 358430 + 358431.

It is an arithmetic number, because the mean of its divisors is an integer number (358431).

2⁷¹⁶⁸⁶¹ is an apocalyptic number.

It is an amenable number.

716861 is a deficient number, since it is larger than the sum of its proper divisors (1).

716861 is an equidigital number, since it uses as much as digits as its factorization.

716861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 29.

The square root of 716861 is about 846.6764435131. The cubic root of 716861 is about 89.4976539859.

The spelling of 716861 in words is "seven hundred sixteen thousand, eight hundred sixty-one".