730800581 has 4 divisors (see below), whose sum is σ = 835200672. Its totient is φ = 626400492.

The previous prime is 730800569. The next prime is 730800593. The reversal of 730800581 is 185008037.

730800581 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, and also an emirpimes, since its reverse is a distinct semiprime: 185008037 = 71 ⋅2605747.

It is an interprime number because it is at equal distance from previous prime (730800569) and next prime (730800593).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-730800581 is a prime.

It is a super-2 number, since 2×730800581² = 1068138978379875122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730800281) 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, 52200035 + ... + 52200048.

It is an arithmetic number, because the mean of its divisors is an integer number (208800168).

Almost surely, 2^730800581 is an apocalyptic number.

It is an amenable number.

730800581 is a deficient number, since it is larger than the sum of its proper divisors (104400091).

730800581 is a wasteful number, since it uses less digits than its factorization.

730800581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104400090.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 730800581 is about 27033.3235285638. The cubic root of 730800581 is about 900.7403706143.

The spelling of 730800581 in words is "seven hundred thirty million, eight hundred thousand, five hundred eighty-one".