728699 has 2 divisors, whose sum is σ = 728700. Its totient is φ = 728698.

The previous prime is 728687. The next prime is 728701. The reversal of 728699 is 996827.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 728699 - 2¹⁶ = 663163 is a prime.

Together with 728701, it forms a pair of twin primes.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 728699.

It is not a weakly prime, because it can be changed into another prime (728639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364349 + 364350.

It is an arithmetic number, because the mean of its divisors is an integer number (364350).

2⁷²⁸⁶⁹⁹ is an apocalyptic number.

728699 is a deficient number, since it is larger than the sum of its proper divisors (1).

728699 is an equidigital number, since it uses as much as digits as its factorization.

728699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 728699 is about 853.6386823475. The cubic root of 728699 is about 89.9876114635.

The spelling of 728699 in words is "seven hundred twenty-eight thousand, six hundred ninety-nine".