981713 has 2 divisors, whose sum is σ = 981714. Its totient is φ = 981712.

The previous prime is 981707. The next prime is 981731. The reversal of 981713 is 317189.

Together with next prime (981731) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 508369 + 473344 = 713^2 + 688^2 .

It is an emirp because it is prime and its reverse (317189) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 981713 - 2⁴ = 981697 is a prime.

It is not a weakly prime, because it can be changed into another prime (981703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490856 + 490857.

It is an arithmetic number, because the mean of its divisors is an integer number (490857).

2⁹⁸¹⁷¹³ is an apocalyptic number.

It is an amenable number.

981713 is a deficient number, since it is larger than the sum of its proper divisors (1).

981713 is an equidigital number, since it uses as much as digits as its factorization.

981713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 29.

The square root of 981713 is about 990.8143115640. The cubic root of 981713 is about 99.3866794020.

The spelling of 981713 in words is "nine hundred eighty-one thousand, seven hundred thirteen".