730712808689 has 2 divisors, whose sum is σ = 730712808690. Its totient is φ = 730712808688.

The previous prime is 730712808611. The next prime is 730712808779. The reversal of 730712808689 is 986808217037.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 590758257664 + 139954551025 = 768608^2 + 374105^2 .

It is a cyclic number.

It is not a de Polignac number, because 730712808689 - 2¹² = 730712804593 is a prime.

It is a super-2 number, since 2×730712808689² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (730712808589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365356404344 + 365356404345.

It is an arithmetic number, because the mean of its divisors is an integer number (365356404345).

Almost surely, 2^730712808689 is an apocalyptic number.

It is an amenable number.

730712808689 is a deficient number, since it is larger than the sum of its proper divisors (1).

730712808689 is an equidigital number, since it uses as much as digits as its factorization.

730712808689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8128512, while the sum is 59.

The spelling of 730712808689 in words is "seven hundred thirty billion, seven hundred twelve million, eight hundred eight thousand, six hundred eighty-nine".