729450685 has 8 divisors (see below), whose sum is σ = 875957760. Its totient is φ = 583149264.

The previous prime is 729450661. The next prime is 729450697. The reversal of 729450685 is 586054927.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-729450685 is a prime.

It is a congruent 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, 43497 + ... + 57886.

It is an arithmetic number, because the mean of its divisors is an integer number (109494720).

Almost surely, 2^729450685 is an apocalyptic number.

It is an amenable number.

729450685 is a deficient number, since it is larger than the sum of its proper divisors (146507075).

729450685 is a wasteful number, since it uses less digits than its factorization.

729450685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102827.

The product of its (nonzero) digits is 604800, while the sum is 46.

The square root of 729450685 is about 27008.3447289907. The cubic root of 729450685 is about 900.1854288713.

The spelling of 729450685 in words is "seven hundred twenty-nine million, four hundred fifty thousand, six hundred eighty-five".