728068591 has 2 divisors, whose sum is σ = 728068592. Its totient is φ = 728068590.

The previous prime is 728068589. The next prime is 728068637. The reversal of 728068591 is 195860827.

It is an a-pointer prime, because the next prime (728068637) can be obtained adding 728068591 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 728068591 - 2¹ = 728068589 is a prime.

Together with 728068589, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728068531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364034295 + 364034296.

It is an arithmetic number, because the mean of its divisors is an integer number (364034296).

Almost surely, 2^728068591 is an apocalyptic number.

728068591 is a deficient number, since it is larger than the sum of its proper divisors (1).

728068591 is an equidigital number, since it uses as much as digits as its factorization.

728068591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 46.

The square root of 728068591 is about 26982.7461723228. The cubic root of 728068591 is about 899.6165407596.

The spelling of 728068591 in words is "seven hundred twenty-eight million, sixty-eight thousand, five hundred ninety-one".