730086813 has 6 divisors (see below), whose sum is σ = 1054569854. Its totient is φ = 486724536.

The previous prime is 730086779. The next prime is 730086829. The reversal of 730086813 is 318680037.

It can be written as a sum of positive squares in only one way, i.e., 384238404 + 345848409 = 19602^2 + 18597^2 .

It is not a de Polignac number, because 730086813 - 2²⁶ = 662977949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730016813) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40560370 + ... + 40560387.

Almost surely, 2^730086813 is an apocalyptic number.

It is an amenable number.

730086813 is a deficient number, since it is larger than the sum of its proper divisors (324483041).

730086813 is a wasteful number, since it uses less digits than its factorization.

730086813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81120763 (or 81120760 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 730086813 is about 27020.1186710940. The cubic root of 730086813 is about 900.4470260755.

The spelling of 730086813 in words is "seven hundred thirty million, eighty-six thousand, eight hundred thirteen".