730161 has 8 divisors (see below), whose sum is σ = 1081760. Its totient is φ = 486756.

The previous prime is 730157. The next prime is 730187. The reversal of 730161 is 161037.

It is not a de Polignac number, because 730161 - 2² = 730157 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 730161.

It is not an unprimeable number, because it can be changed into a prime (730111) 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, 13495 + ... + 13548.

It is an arithmetic number, because the mean of its divisors is an integer number (135220).

2⁷³⁰¹⁶¹ is an apocalyptic number.

It is an amenable number.

730161 is a deficient number, since it is larger than the sum of its proper divisors (351599).

730161 is a wasteful number, since it uses less digits than its factorization.

730161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27052 (or 27046 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 730161 is about 854.4945874609. The cubic root of 730161 is about 90.0477524367.

Adding to 730161 its reverse (161037), we get a palindrome (891198).

The spelling of 730161 in words is "seven hundred thirty thousand, one hundred sixty-one".