728813597 has 2 divisors, whose sum is σ = 728813598. Its totient is φ = 728813596.

The previous prime is 728813573. The next prime is 728813629. The reversal of 728813597 is 795318827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 515244601 + 213568996 = 22699^2 + 14614^2 .

It is a cyclic number.

It is not a de Polignac number, because 728813597 - 2¹⁴ = 728797213 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728815597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364406798 + 364406799.

It is an arithmetic number, because the mean of its divisors is an integer number (364406799).

Almost surely, 2^728813597 is an apocalyptic number.

It is an amenable number.

728813597 is a deficient number, since it is larger than the sum of its proper divisors (1).

728813597 is an equidigital number, since it uses as much as digits as its factorization.

728813597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 50.

The square root of 728813597 is about 26996.5478719039. The cubic root of 728813597 is about 899.9232844075.

The spelling of 728813597 in words is "seven hundred twenty-eight million, eight hundred thirteen thousand, five hundred ninety-seven".