613888730 has 32 divisors (see below), whose sum is σ = 1360001664. Its totient is φ = 194285376.

The previous prime is 613888711. The next prime is 613888739. The reversal of 613888730 is 37888316.

613888730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (613888739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 336392 + ... + 338211.

It is an arithmetic number, because the mean of its divisors is an integer number (42500052).

Almost surely, 2^613888730 is an apocalyptic number.

613888730 is an abundant number, since it is smaller than the sum of its proper divisors (746112934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

613888730 is a wasteful number, since it uses less digits than its factorization.

613888730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674630.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 613888730 is about 24776.7780391237. The cubic root of 613888730 is about 849.8909802509.

The spelling of 613888730 in words is "six hundred thirteen million, eight hundred eighty-eight thousand, seven hundred thirty".