730841 has 4 divisors (see below), whose sum is σ = 742884. Its totient is φ = 718800.

The previous prime is 730837. The next prime is 730843. The reversal of 730841 is 148037.

730841 = 604² + 605².

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 148037 = 37 ⋅4001.

It can be written as a sum of positive squares in 2 ways, for example, as 364816 + 366025 = 604^2 + 605^2 .

It is a cyclic number.

It is not a de Polignac number, because 730841 - 2² = 730837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (730843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5930 + ... + 6051.

It is an arithmetic number, because the mean of its divisors is an integer number (185721).

2⁷³⁰⁸⁴¹ is an apocalyptic number.

730841 is the 605-th centered square number.

It is an amenable number.

730841 is a deficient number, since it is larger than the sum of its proper divisors (12043).

730841 is a wasteful number, since it uses less digits than its factorization.

730841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12042.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 730841 is about 854.8923908891. The cubic root of 730841 is about 90.0756976309.

Adding to 730841 its reverse (148037), we get a palindrome (878878).

The spelling of 730841 in words is "seven hundred thirty thousand, eight hundred forty-one".