728847697 has 2 divisors, whose sum is σ = 728847698. Its totient is φ = 728847696.

The previous prime is 728847661. The next prime is 728847701. The reversal of 728847697 is 796748827.

728847697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 689797696 + 39050001 = 26264^2 + 6249^2 .

It is a cyclic number.

It is not a de Polignac number, because 728847697 - 2⁷ = 728847569 is a prime.

It is not a weakly prime, because it can be changed into another prime (728845697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364423848 + 364423849.

It is an arithmetic number, because the mean of its divisors is an integer number (364423849).

Almost surely, 2^728847697 is an apocalyptic number.

It is an amenable number.

728847697 is a deficient number, since it is larger than the sum of its proper divisors (1).

728847697 is an equidigital number, since it uses as much as digits as its factorization.

728847697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9483264, while the sum is 58.

The square root of 728847697 is about 26997.1794267475. The cubic root of 728847697 is about 899.9373195030.

The spelling of 728847697 in words is "seven hundred twenty-eight million, eight hundred forty-seven thousand, six hundred ninety-seven".