729503 has 2 divisors, whose sum is σ = 729504. Its totient is φ = 729502.

The previous prime is 729497. The next prime is 729511. The reversal of 729503 is 305927.

It is a weak prime.

It is an emirp because it is prime and its reverse (305927) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 729503 - 2¹⁶ = 663967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (729203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364751 + 364752.

It is an arithmetic number, because the mean of its divisors is an integer number (364752).

2⁷²⁹⁵⁰³ is an apocalyptic number.

729503 is a deficient number, since it is larger than the sum of its proper divisors (1).

729503 is an equidigital number, since it uses as much as digits as its factorization.

729503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 729503 is about 854.1094777603. The cubic root of 729503 is about 90.0206948295.

The spelling of 729503 in words is "seven hundred twenty-nine thousand, five hundred three".