728653999 has 2 divisors, whose sum is σ = 728654000. Its totient is φ = 728653998.

The previous prime is 728653997. The next prime is 728654027. The reversal of 728653999 is 999356827.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 728653999 - 2¹ = 728653997 is a prime.

Together with 728653997, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728653997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364326999 + 364327000.

It is an arithmetic number, because the mean of its divisors is an integer number (364327000).

Almost surely, 2^728653999 is an apocalyptic number.

728653999 is a deficient number, since it is larger than the sum of its proper divisors (1).

728653999 is an equidigital number, since it uses as much as digits as its factorization.

728653999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7348320, while the sum is 58.

The square root of 728653999 is about 26993.5918136138. The cubic root of 728653999 is about 899.8575902245.

The spelling of 728653999 in words is "seven hundred twenty-eight million, six hundred fifty-three thousand, nine hundred ninety-nine".