730745 has 8 divisors (see below), whose sum is σ = 928584. Its totient is φ = 550144.

The previous prime is 730727. The next prime is 730747. The reversal of 730745 is 547037.

It can be written as a sum of positive squares in 4 ways, for example, as 218089 + 512656 = 467^2 + 716^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 730745 - 2¹⁴ = 714361 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (730747) 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 7 ways as a sum of consecutive naturals, for example, 4214 + ... + 4383.

It is an arithmetic number, because the mean of its divisors is an integer number (116073).

2⁷³⁰⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

730745 is a deficient number, since it is larger than the sum of its proper divisors (197839).

730745 is a wasteful number, since it uses less digits than its factorization.

730745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8619.

The product of its (nonzero) digits is 2940, while the sum is 26.

The square root of 730745 is about 854.8362416276. The cubic root of 730745 is about 90.0717534781.

The spelling of 730745 in words is "seven hundred thirty thousand, seven hundred forty-five".