730508057 has 8 divisors (see below), whose sum is σ = 776123400. Its totient is φ = 686254464.

The previous prime is 730508047. The next prime is 730508089. The reversal of 730508057 is 750805037.

730508057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 177129481 + 553378576 = 13309^2 + 23524^2 .

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 730508057 - 2⁶ = 730507993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (730508047) 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, 339332 + ... + 341477.

It is an arithmetic number, because the mean of its divisors is an integer number (97015425).

Almost surely, 2^730508057 is an apocalyptic number.

It is an amenable number.

730508057 is a deficient number, since it is larger than the sum of its proper divisors (45615343).

730508057 is a wasteful number, since it uses less digits than its factorization.

730508057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680875.

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 730508057 is about 27027.9125535066. The cubic root of 730508057 is about 900.6201721420.

The spelling of 730508057 in words is "seven hundred thirty million, five hundred eight thousand, fifty-seven".