730565 has 16 divisors (see below), whose sum is σ = 984960. Its totient is φ = 515520.

The previous prime is 730559. The next prime is 730567. The reversal of 730565 is 565037.

730565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 730565 - 2¹² = 726469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1856 + ... + 2214.

It is an arithmetic number, because the mean of its divisors is an integer number (61560).

2⁷³⁰⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

730565 is a deficient number, since it is larger than the sum of its proper divisors (254395).

730565 is a wasteful number, since it uses less digits than its factorization.

730565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412.

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 730565 is about 854.7309518205. The cubic root of 730565 is about 90.0643572606.

It can be divided in two parts, 7305 and 65, that multiplied together give a triangular number (474825 = T₉₇₄).

The spelling of 730565 in words is "seven hundred thirty thousand, five hundred sixty-five".