687762660612 has 24 divisors (see below), whose sum is σ = 1605548540736. Its totient is φ = 229144363168.

The previous prime is 687762660523. The next prime is 687762660623. The reversal of 687762660612 is 216066267786.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13706043 + ... + 13756130.

It is an arithmetic number, because the mean of its divisors is an integer number (66897855864).

Almost surely, 2^687762660612 is an apocalyptic number.

It is an amenable number.

687762660612 is an abundant number, since it is smaller than the sum of its proper divisors (917785880124).

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

687762660612 is a wasteful number, since it uses less digits than its factorization.

687762660612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27464267 (or 27464265 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 57.

The spelling of 687762660612 in words is "six hundred eighty-seven billion, seven hundred sixty-two million, six hundred sixty thousand, six hundred twelve".