68668565 has 32 divisors (see below), whose sum is σ = 102359040. Its totient is φ = 43156800.

The previous prime is 68668543. The next prime is 68668571. The reversal of 68668565 is 56586686.

It is not a de Polignac number, because 68668565 - 2⁸ = 68668309 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18950 + ... + 22280.

It is an arithmetic number, because the mean of its divisors is an integer number (3198720).

Almost surely, 2^68668565 is an apocalyptic number.

It is an amenable number.

68668565 is a deficient number, since it is larger than the sum of its proper divisors (33690475).

68668565 is a wasteful number, since it uses less digits than its factorization.

68668565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3393.

The product of its digits is 2073600, while the sum is 50.

The square root of 68668565 is about 8286.6498055607. The cubic root of 68668565 is about 409.4988224783.

The spelling of 68668565 in words is "sixty-eight million, six hundred sixty-eight thousand, five hundred sixty-five".