687611424116786 has 16 divisors (see below), whose sum is σ = 1110945275788824. Its totient is φ = 317305301706624.

The previous prime is 687611424116713. The next prime is 687611424116887.

687611424116786 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 686066700765625 + 1544723351161 = 26192875^2 + 1242869^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2242223585 + ... + 2242530228.

Almost surely, 2^{687611424116786} is an apocalyptic number.

687611424116786 is a deficient number, since it is larger than the sum of its proper divisors (423333851672038).

687611424116786 is a wasteful number, since it uses less digits than its factorization.

687611424116786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4484759725.

The product of its digits is 130056192, while the sum is 68.

The spelling of 687611424116786 in words is "six hundred eighty-seven trillion, six hundred eleven billion, four hundred twenty-four million, one hundred sixteen thousand, seven hundred eighty-six".