729766 has 4 divisors (see below), whose sum is σ = 1094652. Its totient is φ = 364882.

The previous prime is 729761. The next prime is 729779. The reversal of 729766 is 667927.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182440 + ... + 182443.

It is an arithmetic number, because the mean of its divisors is an integer number (273663).

2⁷²⁹⁷⁶⁶ is an apocalyptic number.

729766 is a deficient number, since it is larger than the sum of its proper divisors (364886).

729766 is a wasteful number, since it uses less digits than its factorization.

729766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364885.

The product of its digits is 31752, while the sum is 37.

The square root of 729766 is about 854.2634254140. The cubic root of 729766 is about 90.0315115993.

The spelling of 729766 in words is "seven hundred twenty-nine thousand, seven hundred sixty-six".