613657868 has 12 divisors (see below), whose sum is σ = 1076980800. Its totient is φ = 305949072.

The previous prime is 613657861. The next prime is 613657883. The reversal of 613657868 is 868756316.

It is a happy number.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (613657861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218396 + ... + 221187.

It is an arithmetic number, because the mean of its divisors is an integer number (89748400).

Almost surely, 2^613657868 is an apocalyptic number.

It is an amenable number.

613657868 is a deficient number, since it is larger than the sum of its proper divisors (463322932).

613657868 is a wasteful number, since it uses less digits than its factorization.

613657868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439936 (or 439934 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 50.

The square root of 613657868 is about 24772.1187628350. The cubic root of 613657868 is about 849.7844288393.

The spelling of 613657868 in words is "six hundred thirteen million, six hundred fifty-seven thousand, eight hundred sixty-eight".