868537667705 has 16 divisors (see below), whose sum is σ = 1043389121040. Its totient is φ = 694067877888.

The previous prime is 868537667651. The next prime is 868537667717. The reversal of 868537667705 is 507766735868.

It can be written as a sum of positive squares in 8 ways, for example, as 251012022121 + 617525645584 = 501011^2 + 785828^2 .

It is a cyclic number.

It is not a de Polignac number, because 868537667705 - 2²⁰ = 868536619129 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21719009 + ... + 21758961.

It is an arithmetic number, because the mean of its divisors is an integer number (65211820065).

Almost surely, 2^868537667705 is an apocalyptic number.

It is an amenable number.

868537667705 is a deficient number, since it is larger than the sum of its proper divisors (174851453335).

868537667705 is a wasteful number, since it uses less digits than its factorization.

868537667705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44620.

The product of its (nonzero) digits is 355622400, while the sum is 68.

The spelling of 868537667705 in words is "eight hundred sixty-eight billion, five hundred thirty-seven million, six hundred sixty-seven thousand, seven hundred five".