728693297 has 2 divisors, whose sum is σ = 728693298. Its totient is φ = 728693296.

The previous prime is 728693249. The next prime is 728693333. The reversal of 728693297 is 792396827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 566487601 + 162205696 = 23801^2 + 12736^2 .

It is a cyclic number.

It is not a de Polignac number, because 728693297 - 2¹⁰ = 728692273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (728692297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364346648 + 364346649.

It is an arithmetic number, because the mean of its divisors is an integer number (364346649).

Almost surely, 2^728693297 is an apocalyptic number.

It is an amenable number.

728693297 is a deficient number, since it is larger than the sum of its proper divisors (1).

728693297 is an equidigital number, since it uses as much as digits as its factorization.

728693297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 53.

The square root of 728693297 is about 26994.3197173035. The cubic root of 728693297 is about 899.8737670692.

The spelling of 728693297 in words is "seven hundred twenty-eight million, six hundred ninety-three thousand, two hundred ninety-seven".