729569906 has 16 divisors (see below), whose sum is σ = 1205945664. Its totient is φ = 328893264.

The previous prime is 729569899. The next prime is 729569933. The reversal of 729569906 is 609965927.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325166 + ... + 327401.

It is an arithmetic number, because the mean of its divisors is an integer number (75371604).

Almost surely, 2^729569906 is an apocalyptic number.

729569906 is a deficient number, since it is larger than the sum of its proper divisors (476375758).

729569906 is a wasteful number, since it uses less digits than its factorization.

729569906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652625.

The product of its (nonzero) digits is 1837080, while the sum is 53.

The square root of 729569906 is about 27010.5517529724. The cubic root of 729569906 is about 900.2344681291.

The spelling of 729569906 in words is "seven hundred twenty-nine million, five hundred sixty-nine thousand, nine hundred six".