613040139 has 6 divisors (see below), whose sum is σ = 885502436. Its totient is φ = 408693420.

The previous prime is 613040123. The next prime is 613040143. The reversal of 613040139 is 931040316.

613040139 is a `hidden beast` number, since 613 + 0 + 40 + 1 + 3 + 9 = 666.

It is not a de Polignac number, because 613040139 - 2⁴ = 613040123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (613040189) 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, 34057777 + ... + 34057794.

Almost surely, 2^613040139 is an apocalyptic number.

613040139 is a deficient number, since it is larger than the sum of its proper divisors (272462297).

613040139 is a wasteful number, since it uses less digits than its factorization.

613040139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68115577 (or 68115574 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 613040139 is about 24759.6473924812. The cubic root of 613040139 is about 849.4991924174.

The spelling of 613040139 in words is "six hundred thirteen million, forty thousand, one hundred thirty-nine".