729071 has 6 divisors (see below), whose sum is σ = 848160. Its totient is φ = 624876.

The previous prime is 729059. The next prime is 729073. The reversal of 729071 is 170927.

It is not a de Polignac number, because 729071 - 2¹⁰ = 728047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 729071.

It is a congruent 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 5 ways as a sum of consecutive naturals, for example, 7391 + ... + 7488.

It is an arithmetic number, because the mean of its divisors is an integer number (141360).

2⁷²⁹⁰⁷¹ is an apocalyptic number.

729071 is a deficient number, since it is larger than the sum of its proper divisors (119089).

729071 is a wasteful number, since it uses less digits than its factorization.

729071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14893 (or 14886 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 26.

The square root of 729071 is about 853.8565453283. The cubic root of 729071 is about 90.0029217158.

Adding to 729071 its reverse (170927), we get a palindrome (899998).

The spelling of 729071 in words is "seven hundred twenty-nine thousand, seventy-one".