688485671587 has 16 divisors (see below), whose sum is σ = 788871820032. Its totient is φ = 588609252000.

The previous prime is 688485671581. The next prime is 688485671593. The reversal of 688485671587 is 785176584886.

It is an interprime number because it is at equal distance from previous prime (688485671581) and next prime (688485671593).

It is a de Polignac number, because none of the positive numbers 2^k-688485671587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (688485671581) by changing a digit.

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, 4162212 + ... + 4324462.

It is an arithmetic number, because the mean of its divisors is an integer number (49304488752).

Almost surely, 2^688485671587 is an apocalyptic number.

688485671587 is a deficient number, since it is larger than the sum of its proper divisors (100386148445).

688485671587 is a wasteful number, since it uses less digits than its factorization.

688485671587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163818.

The product of its digits is 722534400, while the sum is 73.

The spelling of 688485671587 in words is "six hundred eighty-eight billion, four hundred eighty-five million, six hundred seventy-one thousand, five hundred eighty-seven".