730065 has 32 divisors (see below), whose sum is σ = 1416960. Its totient is φ = 313344.

The previous prime is 730049. The next prime is 730069. The reversal of 730065 is 560037.

730065 = T₁₉₀ + T₁₉₁ + ... + T₂₂₃.

730065 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 730065 - 2⁴ = 730049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

730065 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (730069) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1581 + ... + 1989.

It is an arithmetic number, because the mean of its divisors is an integer number (44280).

2⁷³⁰⁰⁶⁵ is an apocalyptic number.

It is an amenable number.

730065 is a deficient number, since it is larger than the sum of its proper divisors (686895).

730065 is a wasteful number, since it uses less digits than its factorization.

730065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 730065 is about 854.4384120579. The cubic root of 730065 is about 90.0438058354.

The spelling of 730065 in words is "seven hundred thirty thousand, sixty-five".