728387317597 has 2 divisors, whose sum is σ = 728387317598. Its totient is φ = 728387317596.

The previous prime is 728387317591. The next prime is 728387317627. The reversal of 728387317597 is 795713783827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 651166688601 + 77220628996 = 806949^2 + 277886^2 .

It is a cyclic number.

It is not a de Polignac number, because 728387317597 - 2³ = 728387317589 is a prime.

It is a super-3 number, since 3×728387317597³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728387317591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364193658798 + 364193658799.

It is an arithmetic number, because the mean of its divisors is an integer number (364193658799).

Almost surely, 2^728387317597 is an apocalyptic number.

It is an amenable number.

728387317597 is a deficient number, since it is larger than the sum of its proper divisors (1).

728387317597 is an equidigital number, since it uses as much as digits as its factorization.

728387317597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124467840, while the sum is 67.

The spelling of 728387317597 in words is "seven hundred twenty-eight billion, three hundred eighty-seven million, three hundred seventeen thousand, five hundred ninety-seven".