616256905 has 16 divisors (see below), whose sum is σ = 832762368. Its totient is φ = 433728000.

The previous prime is 616256899. The next prime is 616256933. The reversal of 616256905 is 509652616.

616256905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 616256905 - 2⁷ = 616256777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179016 + ... + 182425.

It is an arithmetic number, because the mean of its divisors is an integer number (52047648).

Almost surely, 2^616256905 is an apocalyptic number.

It is an amenable number.

616256905 is a deficient number, since it is larger than the sum of its proper divisors (216505463).

616256905 is a wasteful number, since it uses less digits than its factorization.

616256905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361488.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 616256905 is about 24824.5222511935. The cubic root of 616256905 is about 850.9824418971.

The spelling of 616256905 in words is "six hundred sixteen million, two hundred fifty-six thousand, nine hundred five".