729556 has 6 divisors (see below), whose sum is σ = 1276730. Its totient is φ = 364776.

The previous prime is 729551. The next prime is 729557. The reversal of 729556 is 655927.

It can be written as a sum of positive squares in only one way, i.e., 722500 + 7056 = 850^2 + 84^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 91191 + ... + 91198.

2⁷²⁹⁵⁵⁶ is an apocalyptic number.

It is an amenable number.

729556 is a deficient number, since it is larger than the sum of its proper divisors (547174).

729556 is a wasteful number, since it uses less digits than its factorization.

729556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182393 (or 182391 counting only the distinct ones).

The product of its digits is 18900, while the sum is 34.

The square root of 729556 is about 854.1405036644. The cubic root of 729556 is about 90.0228748440.

The spelling of 729556 in words is "seven hundred twenty-nine thousand, five hundred fifty-six".