729345 has 8 divisors (see below), whose sum is σ = 1166976. Its totient is φ = 388976.

The previous prime is 729331. The next prime is 729359. The reversal of 729345 is 543927.

It is an interprime number because it is at equal distance from previous prime (729331) and next prime (729359).

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 729345 - 2⁴ = 729329 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24297 + ... + 24326.

It is an arithmetic number, because the mean of its divisors is an integer number (145872).

2⁷²⁹³⁴⁵ is an apocalyptic number.

It is an amenable number.

729345 is a deficient number, since it is larger than the sum of its proper divisors (437631).

729345 is a wasteful number, since it uses less digits than its factorization.

729345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48631.

The product of its digits is 7560, while the sum is 30.

The square root of 729345 is about 854.0169787539. The cubic root of 729345 is about 90.0141952918.

The spelling of 729345 in words is "seven hundred twenty-nine thousand, three hundred forty-five".