730165 has 4 divisors (see below), whose sum is σ = 876204. Its totient is φ = 584128.

The previous prime is 730157. The next prime is 730187. The reversal of 730165 is 561037.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 561037 = 461 ⋅1217.

It can be written as a sum of positive squares in 2 ways, for example, as 400689 + 329476 = 633^2 + 574^2 .

It is a cyclic number.

It is not a de Polignac number, because 730165 - 2³ = 730157 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73012 + ... + 73021.

It is an arithmetic number, because the mean of its divisors is an integer number (219051).

2⁷³⁰¹⁶⁵ is an apocalyptic number.

It is an amenable number.

730165 is a deficient number, since it is larger than the sum of its proper divisors (146039).

730165 is a wasteful number, since it uses less digits than its factorization.

730165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146038.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 730165 is about 854.4969280226. The cubic root of 730165 is about 90.0479168709.

The spelling of 730165 in words is "seven hundred thirty thousand, one hundred sixty-five".