68678565605 has 24 divisors (see below), whose sum is σ = 89434752768. Its totient is φ = 50606652096.

The previous prime is 68678565577. The next prime is 68678565607. The reversal of 68678565605 is 50656587686.

It is not a de Polignac number, because 68678565605 - 2¹⁶ = 68678500069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68678565607) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 303464 + ... + 479006.

It is an arithmetic number, because the mean of its divisors is an integer number (3726448032).

Almost surely, 2^68678565605 is an apocalyptic number.

68678565605 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68678565605 is a deficient number, since it is larger than the sum of its proper divisors (20756187163).

68678565605 is a wasteful number, since it uses less digits than its factorization.

68678565605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176037 (or 176024 counting only the distinct ones).

The product of its (nonzero) digits is 72576000, while the sum is 62.

The spelling of 68678565605 in words is "sixty-eight billion, six hundred seventy-eight million, five hundred sixty-five thousand, six hundred five".