728701 has 2 divisors, whose sum is σ = 728702. Its totient is φ = 728700.

The previous prime is 728699. The next prime is 728713. The reversal of 728701 is 107827.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 488601 + 240100 = 699^2 + 490^2 .

It is an emirp because it is prime and its reverse (107827) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 728701 - 2¹ = 728699 is a prime.

Together with 728699, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728731) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364350 + 364351.

It is an arithmetic number, because the mean of its divisors is an integer number (364351).

2⁷²⁸⁷⁰¹ is an apocalyptic number.

It is an amenable number.

728701 is a deficient number, since it is larger than the sum of its proper divisors (1).

728701 is an equidigital number, since it uses as much as digits as its factorization.

728701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 728701 is about 853.6398538025. The cubic root of 728701 is about 89.9876937906.

The spelling of 728701 in words is "seven hundred twenty-eight thousand, seven hundred one".