730361605 has 4 divisors (see below), whose sum is σ = 876433932. Its totient is φ = 584289280.

The previous prime is 730361591. The next prime is 730361609. The reversal of 730361605 is 506163037.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 97436641 + 632924964 = 9871^2 + 25158^2 .

It is not a de Polignac number, because 730361605 - 2¹⁷ = 730230533 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730361609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73036156 + ... + 73036165.

It is an arithmetic number, because the mean of its divisors is an integer number (219108483).

Almost surely, 2^730361605 is an apocalyptic number.

It is an amenable number.

730361605 is a deficient number, since it is larger than the sum of its proper divisors (146072327).

730361605 is a wasteful number, since it uses less digits than its factorization.

730361605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146072326.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 730361605 is about 27025.2031444724. The cubic root of 730361605 is about 900.5599827804.

The spelling of 730361605 in words is "seven hundred thirty million, three hundred sixty-one thousand, six hundred five".