729285723 has 6 divisors (see below), whose sum is σ = 1053412724. Its totient is φ = 486190476.

The previous prime is 729285709. The next prime is 729285727. The reversal of 729285723 is 327582927.

729285723 is a `hidden beast` number, since 72 + 9 + 2 + 8 + 572 + 3 = 666.

It is not a de Polignac number, because 729285723 - 2⁹ = 729285211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (729285727) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40515865 + ... + 40515882.

Almost surely, 2^729285723 is an apocalyptic number.

729285723 is a deficient number, since it is larger than the sum of its proper divisors (324127001).

729285723 is a wasteful number, since it uses less digits than its factorization.

729285723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81031753 (or 81031750 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 729285723 is about 27005.2906483156. The cubic root of 729285723 is about 900.1175661233.

The spelling of 729285723 in words is "seven hundred twenty-nine million, two hundred eighty-five thousand, seven hundred twenty-three".