80729 has 8 divisors (see below), whose sum is σ = 90720. Its totient is φ = 71200.

The previous prime is 80713. The next prime is 80737. The reversal of 80729 is 92708.

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 80729 - 2⁴ = 80713 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 80698 and 80707.

It is not an unprimeable number, because it can be changed into a prime (80749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362 + ... + 540.

It is an arithmetic number, because the mean of its divisors is an integer number (11340).

2⁸⁰⁷²⁹ is an apocalyptic number.

It is an amenable number.

80729 is a deficient number, since it is larger than the sum of its proper divisors (9991).

80729 is a wasteful number, since it uses less digits than its factorization.

80729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 80729 is about 284.1284920595. The cubic root of 80729 is about 43.2191801547.

The spelling of 80729 in words is "eighty thousand, seven hundred twenty-nine".