65585656 has 16 divisors (see below), whose sum is σ = 123071040. Its totient is φ = 32766720.

The previous prime is 65585647. The next prime is 65585659. The reversal of 65585656 is 65658556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65585659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11161 + ... + 15991.

It is an arithmetic number, because the mean of its divisors is an integer number (7691940).

Almost surely, 2^65585656 is an apocalyptic number.

It is an amenable number.

65585656 is a deficient number, since it is larger than the sum of its proper divisors (57485384).

65585656 is a wasteful number, since it uses less digits than its factorization.

65585656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6534 (or 6530 counting only the distinct ones).

The product of its digits is 1080000, while the sum is 46.

The square root of 65585656 is about 8098.4971445324. The cubic root of 65585656 is about 403.2765374723.

Subtracting 65585656 from its reverse (65658556), we obtain a square (72900 = 270²).

The spelling of 65585656 in words is "sixty-five million, five hundred eighty-five thousand, six hundred fifty-six".