729727 has 4 divisors (see below), whose sum is σ = 754920. Its totient is φ = 704536.

The previous prime is 729719. The next prime is 729737. The reversal of 729727 is 727927.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 727927 = 23 ⋅31649.

It is a cyclic number.

It is not a de Polignac number, because 729727 - 2³ = 729719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 729692 and 729701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12553 + ... + 12610.

It is an arithmetic number, because the mean of its divisors is an integer number (188730).

2⁷²⁹⁷²⁷ is an apocalyptic number.

729727 is a deficient number, since it is larger than the sum of its proper divisors (25193).

729727 is a wasteful number, since it uses less digits than its factorization.

729727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25192.

The product of its digits is 12348, while the sum is 34.

The square root of 729727 is about 854.2405984265. The cubic root of 729727 is about 90.0299077558.

The spelling of 729727 in words is "seven hundred twenty-nine thousand, seven hundred twenty-seven".