729681365 has 8 divisors (see below), whose sum is σ = 1000705920. Its totient is φ = 500352912.

The previous prime is 729681331. The next prime is 729681391. The reversal of 729681365 is 563186927.

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

It is a cyclic number.

It is not a de Polignac number, because 729681365 - 2¹⁶ = 729615829 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10423985 + ... + 10424054.

It is an arithmetic number, because the mean of its divisors is an integer number (125088240).

Almost surely, 2^729681365 is an apocalyptic number.

It is an amenable number.

729681365 is a deficient number, since it is larger than the sum of its proper divisors (271024555).

729681365 is a wasteful number, since it uses less digits than its factorization.

729681365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20848051.

The product of its digits is 544320, while the sum is 47.

The square root of 729681365 is about 27012.6149234020. The cubic root of 729681365 is about 900.2803098063.

The spelling of 729681365 in words is "seven hundred twenty-nine million, six hundred eighty-one thousand, three hundred sixty-five".