730845 has 24 divisors (see below), whose sum is σ = 1287000. Its totient is φ = 383616.

The previous prime is 730843. The next prime is 730853. The reversal of 730845 is 548037.

It can be written as a sum of positive squares in 4 ways, for example, as 30276 + 700569 = 174^2 + 837^2 .

It is not a de Polignac number, because 730845 - 2¹ = 730843 is a prime.

It is an Ulam number.

It is a congruent number.

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

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4831 + ... + 4979.

It is an arithmetic number, because the mean of its divisors is an integer number (53625).

2⁷³⁰⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

730845 is a deficient number, since it is larger than the sum of its proper divisors (556155).

730845 is a wasteful number, since it uses less digits than its factorization.

730845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269 (or 266 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 730845 is about 854.8947303616. The cubic root of 730845 is about 90.0758619631.

The spelling of 730845 in words is "seven hundred thirty thousand, eight hundred forty-five".