729065217 has 16 divisors (see below), whose sum is σ = 981227520. Its totient is φ = 481485312.

The previous prime is 729065203. The next prime is 729065219. The reversal of 729065217 is 712560927.

It is not a de Polignac number, because 729065217 - 2⁸ = 729064961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (729065219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385009 + ... + 386897.

It is an arithmetic number, because the mean of its divisors is an integer number (61326720).

Almost surely, 2^729065217 is an apocalyptic number.

It is an amenable number.

729065217 is a deficient number, since it is larger than the sum of its proper divisors (252162303).

729065217 is a wasteful number, since it uses less digits than its factorization.

729065217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 729065217 is about 27001.2076952124. The cubic root of 729065217 is about 900.0268374713.

The spelling of 729065217 in words is "seven hundred twenty-nine million, sixty-five thousand, two hundred seventeen".