613856668 has 24 divisors (see below), whose sum is σ = 1110771200. Its totient is φ = 296526960.

The previous prime is 613856657. The next prime is 613856681. The reversal of 613856668 is 866658316.

613856668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75883 + ... + 83581.

Almost surely, 2^613856668 is an apocalyptic number.

It is an amenable number.

613856668 is a deficient number, since it is larger than the sum of its proper divisors (496914532).

613856668 is a wasteful number, since it uses less digits than its factorization.

613856668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8377 (or 8375 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 49.

The square root of 613856668 is about 24776.1310135380. The cubic root of 613856668 is about 849.8761840412.

The spelling of 613856668 in words is "six hundred thirteen million, eight hundred fifty-six thousand, six hundred sixty-eight".