68687303285 has 8 divisors (see below), whose sum is σ = 87273279576. Its totient is φ = 51717498880.

The previous prime is 68687303281. The next prime is 68687303357. The reversal of 68687303285 is 58230378686.

It can be written as a sum of positive squares in 4 ways, for example, as 832784164 + 67854519121 = 28858^2 + 260489^2 .

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

It is not a de Polignac number, because 68687303285 - 2² = 68687303281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68687303285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68687303281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404042876 + ... + 404043045.

It is an arithmetic number, because the mean of its divisors is an integer number (10909159947).

Almost surely, 2^68687303285 is an apocalyptic number.

It is an amenable number.

68687303285 is a deficient number, since it is larger than the sum of its proper divisors (18585976291).

68687303285 is a wasteful number, since it uses less digits than its factorization.

68687303285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808085943.

The product of its (nonzero) digits is 11612160, while the sum is 56.

The spelling of 68687303285 in words is "sixty-eight billion, six hundred eighty-seven million, three hundred three thousand, two hundred eighty-five".