730680809 has 8 divisors (see below), whose sum is σ = 742592448. Its totient is φ = 718814320.

The previous prime is 730680799. The next prime is 730680817. The reversal of 730680809 is 908086037.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-730680809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (730680109) 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 7 ways as a sum of consecutive naturals, for example, 22139 + ... + 44175.

It is an arithmetic number, because the mean of its divisors is an integer number (92824056).

Almost surely, 2^730680809 is an apocalyptic number.

It is an amenable number.

730680809 is a deficient number, since it is larger than the sum of its proper divisors (11911639).

730680809 is a wasteful number, since it uses less digits than its factorization.

730680809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22575.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 730680809 is about 27031.1081718823. The cubic root of 730680809 is about 900.6911600304.

The spelling of 730680809 in words is "seven hundred thirty million, six hundred eighty thousand, eight hundred nine".