68586487655 has 8 divisors (see below), whose sum is σ = 94061468832. Its totient is φ = 47030734368.

The previous prime is 68586487649. The next prime is 68586487657. The reversal of 68586487655 is 55678468586.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68586487655 - 2⁶ = 68586487591 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 (68586487657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 979806932 + ... + 979807001.

It is an arithmetic number, because the mean of its divisors is an integer number (11757683604).

Almost surely, 2^68586487655 is an apocalyptic number.

68586487655 is a deficient number, since it is larger than the sum of its proper divisors (25474981177).

68586487655 is a wasteful number, since it uses less digits than its factorization.

68586487655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1959613945.

The product of its digits is 387072000, while the sum is 68.

The spelling of 68586487655 in words is "sixty-eight billion, five hundred eighty-six million, four hundred eighty-seven thousand, six hundred fifty-five".