68724046887 has 8 divisors (see below), whose sum is σ = 92472724080. Its totient is φ = 45395700480.

The previous prime is 68724046879. The next prime is 68724046891. The reversal of 68724046887 is 78864042786.

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

It is not a de Polignac number, because 68724046887 - 2³ = 68724046879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68724046887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68724046877) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 105082314 + ... + 105082967.

It is an arithmetic number, because the mean of its divisors is an integer number (11559090510).

Almost surely, 2^68724046887 is an apocalyptic number.

68724046887 is a deficient number, since it is larger than the sum of its proper divisors (23748677193).

68724046887 is a wasteful number, since it uses less digits than its factorization.

68724046887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210165393.

The product of its (nonzero) digits is 28901376, while the sum is 60.

The spelling of 68724046887 in words is "sixty-eight billion, seven hundred twenty-four million, forty-six thousand, eight hundred eighty-seven".