730807121 has 4 divisors (see below), whose sum is σ = 797244144. Its totient is φ = 664370100.

The previous prime is 730807093. The next prime is 730807141. The reversal of 730807121 is 121708037.

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 730807121 - 2⁶ = 730807057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (730807141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33218495 + ... + 33218516.

It is an arithmetic number, because the mean of its divisors is an integer number (199311036).

Almost surely, 2^730807121 is an apocalyptic number.

It is an amenable number.

730807121 is a deficient number, since it is larger than the sum of its proper divisors (66437023).

730807121 is a wasteful number, since it uses less digits than its factorization.

730807121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66437022.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 730807121 is about 27033.4444901126. Note that the first 4 decimals coincide. The cubic root of 730807121 is about 900.7430575418.

The spelling of 730807121 in words is "seven hundred thirty million, eight hundred seven thousand, one hundred twenty-one".