713681 has 2 divisors, whose sum is σ = 713682. Its totient is φ = 713680.

The previous prime is 713663. The next prime is 713737. The reversal of 713681 is 186317.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 707281 + 6400 = 841^2 + 80^2 .

It is an emirp because it is prime and its reverse (186317) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-713681 is a prime.

It is a super-2 number, since 2×713681² = 1018681139522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 713681.

It is not a weakly prime, because it can be changed into another prime (713611) 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, 356840 + 356841.

It is an arithmetic number, because the mean of its divisors is an integer number (356841).

2⁷¹³⁶⁸¹ is an apocalyptic number.

It is an amenable number.

713681 is a deficient number, since it is larger than the sum of its proper divisors (1).

713681 is an equidigital number, since it uses as much as digits as its factorization.

713681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 26.

The square root of 713681 is about 844.7964251818. The cubic root of 713681 is about 89.3651204298.

Adding to 713681 its reverse (186317), we get a palindrome (899998).

The spelling of 713681 in words is "seven hundred thirteen thousand, six hundred eighty-one".