68556565 has 16 divisors (see below), whose sum is σ = 102568320. Its totient is φ = 42736320.

The previous prime is 68556517. The next prime is 68556569. The reversal of 68556565 is 56565586.

It is not a de Polignac number, because 68556565 - 2¹¹ = 68554517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68556569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88650 + ... + 89419.

It is an arithmetic number, because the mean of its divisors is an integer number (6410520).

Almost surely, 2^68556565 is an apocalyptic number.

It is an amenable number.

68556565 is a deficient number, since it is larger than the sum of its proper divisors (34011755).

68556565 is a wasteful number, since it uses less digits than its factorization.

68556565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178092.

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

The square root of 68556565 is about 8279.8891900798. The cubic root of 68556565 is about 409.2760673465.

The spelling of 68556565 in words is "sixty-eight million, five hundred fifty-six thousand, five hundred sixty-five".