729566 has 8 divisors (see below), whose sum is σ = 1124040. Its totient is φ = 354888.

The previous prime is 729559. The next prime is 729569. The reversal of 729566 is 665927.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729569) by changing a digit.

729566 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 in 3 ways as a sum of consecutive naturals, for example, 4856 + ... + 5003.

It is an arithmetic number, because the mean of its divisors is an integer number (140505).

2⁷²⁹⁵⁶⁶ is an apocalyptic number.

729566 is a deficient number, since it is larger than the sum of its proper divisors (394474).

729566 is a wasteful number, since it uses less digits than its factorization.

729566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9898.

The product of its digits is 22680, while the sum is 35.

The square root of 729566 is about 854.1463574821. The cubic root of 729566 is about 90.0232861556.

The spelling of 729566 in words is "seven hundred twenty-nine thousand, five hundred sixty-six".