729718085 has 8 divisors (see below), whose sum is σ = 921749280. Its totient is φ = 553049424.

The previous prime is 729718069. The next prime is 729718091. The reversal of 729718085 is 580817927.

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 729718085 - 2⁴ = 729718069 is a prime.

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, 3840527 + ... + 3840716.

It is an arithmetic number, because the mean of its divisors is an integer number (115218660).

Almost surely, 2^729718085 is an apocalyptic number.

It is an amenable number.

729718085 is a deficient number, since it is larger than the sum of its proper divisors (192031195).

729718085 is a wasteful number, since it uses less digits than its factorization.

729718085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7681267.

The product of its (nonzero) digits is 282240, while the sum is 47.

The square root of 729718085 is about 27013.2945972904. The cubic root of 729718085 is about 900.2954112556.

The spelling of 729718085 in words is "seven hundred twenty-nine million, seven hundred eighteen thousand, eighty-five".