613040140 has 12 divisors (see below), whose sum is σ = 1287384336. Its totient is φ = 245216048.

The previous prime is 613040123. The next prime is 613040143. The reversal of 613040140 is 41040316.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (613040143) 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, 15325984 + ... + 15326023.

It is an arithmetic number, because the mean of its divisors is an integer number (107282028).

Almost surely, 2^613040140 is an apocalyptic number.

It is an amenable number.

613040140 is an abundant number, since it is smaller than the sum of its proper divisors (674344196).

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

613040140 is a wasteful number, since it uses less digits than its factorization.

613040140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30652016 (or 30652014 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 613040140 is about 24759.6474126753. The cubic root of 613040140 is about 849.4991928793.

Adding to 613040140 its reverse (41040316), we get a palindrome (654080456).

The spelling of 613040140 in words is "six hundred thirteen million, forty thousand, one hundred forty".