987713 has 2 divisors, whose sum is σ = 987714. Its totient is φ = 987712.

The previous prime is 987697. The next prime is 987739. The reversal of 987713 is 317789.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 588289 + 399424 = 767^2 + 632^2 .

It is an emirp because it is prime and its reverse (317789) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 987713 - 2⁴ = 987697 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 987713.

It is not a weakly prime, because it can be changed into another prime (987793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493856 + 493857.

It is an arithmetic number, because the mean of its divisors is an integer number (493857).

2⁹⁸⁷⁷¹³ is an apocalyptic number.

It is an amenable number.

987713 is a deficient number, since it is larger than the sum of its proper divisors (1).

987713 is an equidigital number, since it uses as much as digits as its factorization.

987713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10584, while the sum is 35.

The square root of 987713 is about 993.8375118700. The cubic root of 987713 is about 99.5887443397.

The spelling of 987713 in words is "nine hundred eighty-seven thousand, seven hundred thirteen".