729501 has 4 divisors (see below), whose sum is σ = 972672. Its totient is φ = 486332.

The previous prime is 729497. The next prime is 729503. The reversal of 729501 is 105927.

729501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 729501 - 2² = 729497 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121581 + ... + 121586.

It is an arithmetic number, because the mean of its divisors is an integer number (243168).

2⁷²⁹⁵⁰¹ is an apocalyptic number.

It is an amenable number.

729501 is a deficient number, since it is larger than the sum of its proper divisors (243171).

729501 is a wasteful number, since it uses less digits than its factorization.

729501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243170.

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 729501 is about 854.1083069494. The cubic root of 729501 is about 90.0206125627.

The spelling of 729501 in words is "seven hundred twenty-nine thousand, five hundred one".