729688813 has 8 divisors (see below), whose sum is σ = 848064960. Its totient is φ = 614846400.

The previous prime is 729688811. The next prime is 729688829. The reversal of 729688813 is 318886927.

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

It is not a de Polignac number, because 729688813 - 2¹ = 729688811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729688811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 882988 + ... + 883813.

It is an arithmetic number, because the mean of its divisors is an integer number (106008120).

Almost surely, 2^729688813 is an apocalyptic number.

It is an amenable number.

729688813 is a deficient number, since it is larger than the sum of its proper divisors (118376147).

729688813 is a wasteful number, since it uses less digits than its factorization.

729688813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1766867.

The product of its digits is 1161216, while the sum is 52.

The square root of 729688813 is about 27012.7527845646. The cubic root of 729688813 is about 900.2833729081.

The spelling of 729688813 in words is "seven hundred twenty-nine million, six hundred eighty-eight thousand, eight hundred thirteen".