68678565606 has 192 divisors, whose sum is σ = 183382617600. Its totient is φ = 18855555840.

The previous prime is 68678565577. The next prime is 68678565607. The reversal of 68678565606 is 60656587686.

68678565606 is a `hidden beast` number, since 6 + 8 + 6 + 7 + 8 + 565 + 60 + 6 = 666.

It is a super-3 number, since 3×68678565606³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (63).

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 95 ways as a sum of consecutive naturals, for example, 9341620 + ... + 9348968.

It is an arithmetic number, because the mean of its divisors is an integer number (955117800).

Almost surely, 2^68678565606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68678565606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91691308800).

68678565606 is an abundant number, since it is smaller than the sum of its proper divisors (114704051994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68678565606 is a wasteful number, since it uses less digits than its factorization.

68678565606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7481 (or 7469 counting only the distinct ones).

The product of its (nonzero) digits is 87091200, while the sum is 63.

The spelling of 68678565606 in words is "sixty-eight billion, six hundred seventy-eight million, five hundred sixty-five thousand, six hundred six".