729975 has 12 divisors (see below), whose sum is σ = 1207016. Its totient is φ = 389280.

The previous prime is 729947. The next prime is 729977. The reversal of 729975 is 579927.

729975 is nontrivially palindromic in base 14.

It is not a de Polignac number, because 729975 - 2⁵ = 729943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4792 + ... + 4941.

2⁷²⁹⁹⁷⁵ is an apocalyptic number.

729975 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

729975 is a deficient number, since it is larger than the sum of its proper divisors (477041).

729975 is a wasteful number, since it uses less digits than its factorization.

729975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9746 (or 9741 counting only the distinct ones).

The product of its digits is 39690, while the sum is 39.

The square root of 729975 is about 854.3857442631. The cubic root of 729975 is about 90.0401055824.

The spelling of 729975 in words is "seven hundred twenty-nine thousand, nine hundred seventy-five".