730115581 has 8 divisors (see below), whose sum is σ = 788336640. Its totient is φ = 672188592.

The previous prime is 730115579. The next prime is 730115593. The reversal of 730115581 is 185511037.

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 730115581 - 2¹ = 730115579 is a prime.

It is a super-2 number, since 2×730115581² = 1066137523237935122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730115521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68341 + ... + 78298.

It is an arithmetic number, because the mean of its divisors is an integer number (98542080).

Almost surely, 2^730115581 is an apocalyptic number.

It is an amenable number.

730115581 is a deficient number, since it is larger than the sum of its proper divisors (58221059).

730115581 is a wasteful number, since it uses less digits than its factorization.

730115581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147035.

The product of its (nonzero) digits is 4200, while the sum is 31.

The square root of 730115581 is about 27020.6510099220. The cubic root of 730115581 is about 900.4588528516.

The spelling of 730115581 in words is "seven hundred thirty million, one hundred fifteen thousand, five hundred eighty-one".