729165 has 8 divisors (see below), whose sum is σ = 1166688. Its totient is φ = 388880.

The previous prime is 729143. The next prime is 729173. The reversal of 729165 is 561927.

729165 is nontrivially palindromic in base 2.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 729165 - 2⁷ = 729037 is a prime.

729165 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24291 + ... + 24320.

It is an arithmetic number, because the mean of its divisors is an integer number (145836).

2⁷²⁹¹⁶⁵ is an apocalyptic number.

It is an amenable number.

729165 is a deficient number, since it is larger than the sum of its proper divisors (437523).

729165 is a wasteful number, since it uses less digits than its factorization.

729165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48619.

The product of its digits is 3780, while the sum is 30.

The square root of 729165 is about 853.9115879293. The cubic root of 729165 is about 90.0067896112.

The spelling of 729165 in words is "seven hundred twenty-nine thousand, one hundred sixty-five".