687546668000 has 48 divisors (see below), whose sum is σ = 1689302173104. Its totient is φ = 275018665600.

The previous prime is 687546667991. The next prime is 687546668027. The reversal of 687546668000 is 866645786.

It is a happy number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 85939334 + ... + 85947333.

It is an arithmetic number, because the mean of its divisors is an integer number (35193795273).

Almost surely, 2^687546668000 is an apocalyptic number.

It is an amenable number.

687546668000 is an abundant number, since it is smaller than the sum of its proper divisors (1001755505104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

687546668000 is a wasteful number, since it uses less digits than its factorization.

687546668000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171886692 (or 171886674 counting only the distinct ones).

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

The spelling of 687546668000 in words is "six hundred eighty-seven billion, five hundred forty-six million, six hundred sixty-eight thousand".