68686589247 has 4 divisors (see below), whose sum is σ = 91582119000. Its totient is φ = 45791059496.

The previous prime is 68686589227. The next prime is 68686589267. The reversal of 68686589247 is 74298568686.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (68686589227) and next prime (68686589267).

It is a cyclic number.

It is not a de Polignac number, because 68686589247 - 2⁷ = 68686589119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68686589227) 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 3 ways as a sum of consecutive naturals, for example, 11447764872 + ... + 11447764877.

It is an arithmetic number, because the mean of its divisors is an integer number (22895529750).

Almost surely, 2^68686589247 is an apocalyptic number.

68686589247 is a deficient number, since it is larger than the sum of its proper divisors (22895529753).

68686589247 is a wasteful number, since it uses less digits than its factorization.

68686589247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22895529752.

The product of its digits is 278691840, while the sum is 69.

The spelling of 68686589247 in words is "sixty-eight billion, six hundred eighty-six million, five hundred eighty-nine thousand, two hundred forty-seven".