730710581 has 4 divisors (see below), whose sum is σ = 735193632. Its totient is φ = 726227532.

The previous prime is 730710557. The next prime is 730710613. The reversal of 730710581 is 185017037.

730710581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 730710581 - 2¹⁴ = 730694197 is a prime.

It is a super-2 number, since 2×730710581² = 1067875906370715122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730710511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2241281 + ... + 2241606.

It is an arithmetic number, because the mean of its divisors is an integer number (183798408).

Almost surely, 2^730710581 is an apocalyptic number.

It is an amenable number.

730710581 is a deficient number, since it is larger than the sum of its proper divisors (4483051).

730710581 is a wasteful number, since it uses less digits than its factorization.

730710581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4483050.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 730710581 is about 27031.6588651159. The cubic root of 730710581 is about 900.7033929200.

The spelling of 730710581 in words is "seven hundred thirty million, seven hundred ten thousand, five hundred eighty-one".