729075 has 12 divisors (see below), whose sum is σ = 1205528. Its totient is φ = 388800.

The previous prime is 729073. The next prime is 729139. The reversal of 729075 is 570927.

It is a happy number.

It is not a de Polignac number, because 729075 - 2¹ = 729073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (729073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4786 + ... + 4935.

2⁷²⁹⁰⁷⁵ is an apocalyptic number.

729075 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

729075 is a deficient number, since it is larger than the sum of its proper divisors (476453).

729075 is a wasteful number, since it uses less digits than its factorization.

729075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9734 (or 9729 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 30.

The square root of 729075 is about 853.8588876389. The cubic root of 729075 is about 90.0030863139.

The spelling of 729075 in words is "seven hundred twenty-nine thousand, seventy-five".