616505056 has 24 divisors (see below), whose sum is σ = 1231864200. Its totient is φ = 303650688.

The previous prime is 616505011. The next prime is 616505083. The reversal of 616505056 is 650505616.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141631 + ... + 145918.

It is an arithmetic number, because the mean of its divisors is an integer number (51327675).

Almost surely, 2^616505056 is an apocalyptic number.

It is an amenable number.

616505056 is a deficient number, since it is larger than the sum of its proper divisors (615359144).

616505056 is a wasteful number, since it uses less digits than its factorization.

616505056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287626 (or 287618 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 616505056 is about 24829.5198503717. The cubic root of 616505056 is about 851.0966495725.

The spelling of 616505056 in words is "six hundred sixteen million, five hundred five thousand, fifty-six".