613865109 has 16 divisors (see below), whose sum is σ = 961579584. Its totient is φ = 343420800.

The previous prime is 613865093. The next prime is 613865117. The reversal of 613865109 is 901568316.

613865109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 613865109 - 2⁴ = 613865093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613865149) 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, 715032 + ... + 715889.

It is an arithmetic number, because the mean of its divisors is an integer number (60098724).

Almost surely, 2^613865109 is an apocalyptic number.

It is an amenable number.

613865109 is a deficient number, since it is larger than the sum of its proper divisors (347714475).

613865109 is a wasteful number, since it uses less digits than its factorization.

613865109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1430948.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 613865109 is about 24776.3013583545. The cubic root of 613865109 is about 849.8800795065.

The spelling of 613865109 in words is "six hundred thirteen million, eight hundred sixty-five thousand, one hundred nine".