168729 has 8 divisors (see below), whose sum is σ = 245472. Its totient is φ = 102240.

The previous prime is 168719. The next prime is 168731. The reversal of 168729 is 927861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 168729 - 2⁴ = 168713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 5113 = 168729 / (1 + 6 + 8 + 7 + 2 + 9).

It is a self number, because there is not a number n which added to its sum of digits gives 168729.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168719) 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, 2524 + ... + 2589.

It is an arithmetic number, because the mean of its divisors is an integer number (30684).

2¹⁶⁸⁷²⁹ is an apocalyptic number.

It is an amenable number.

168729 is a deficient number, since it is larger than the sum of its proper divisors (76743).

168729 is a wasteful number, since it uses less digits than its factorization.

168729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5127.

The product of its digits is 6048, while the sum is 33.

The square root of 168729 is about 410.7663569476. The cubic root of 168729 is about 55.2581800982.

The spelling of 168729 in words is "one hundred sixty-eight thousand, seven hundred twenty-nine".