656000065 has 16 divisors (see below), whose sum is σ = 905702400. Its totient is φ = 446806080.

The previous prime is 656000057. The next prime is 656000071. The reversal of 656000065 is 560000656.

It is not a de Polignac number, because 656000065 - 2³ = 656000057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 655999997 and 656000042.

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, 57681 + ... + 68110.

It is an arithmetic number, because the mean of its divisors is an integer number (56606400).

Almost surely, 2^656000065 is an apocalyptic number.

It is an amenable number.

656000065 is a deficient number, since it is larger than the sum of its proper divisors (249702335).

656000065 is a wasteful number, since it uses less digits than its factorization.

656000065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125952.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 656000065 is about 25612.4982186432. The cubic root of 656000065 is about 868.8963258520.

The spelling of 656000065 in words is "six hundred fifty-six million, sixty-five", and thus it is an aban number.