688875276870781 has 64 divisors (see below), whose sum is σ = 933370460983296. Its totient is φ = 490971980620800.

The previous prime is 688875276870773. The next prime is 688875276870793. The reversal of 688875276870781 is 187078672578886.

It is not a de Polignac number, because 688875276870781 - 2³ = 688875276870773 is a prime.

It is a super-3 number, since 3×688875276870781³ (a number of 45 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 688875276870692 and 688875276870701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688875276870721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 403073800 + ... + 404779246.

It is an arithmetic number, because the mean of its divisors is an integer number (14583913452864).

Almost surely, 2^{688875276870781} is an apocalyptic number.

It is an amenable number.

688875276870781 is a deficient number, since it is larger than the sum of its proper divisors (244495184112515).

688875276870781 is a wasteful number, since it uses less digits than its factorization.

688875276870781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709162.

The product of its (nonzero) digits is 28323348480, while the sum is 88.

The spelling of 688875276870781 in words is "six hundred eighty-eight trillion, eight hundred seventy-five billion, two hundred seventy-six million, eight hundred seventy thousand, seven hundred eighty-one".