687519451652 has 24 divisors (see below), whose sum is σ = 1324803846240. Its totient is φ = 309588196160.

The previous prime is 687519451649. The next prime is 687519451687. The reversal of 687519451652 is 256154915786.

It is a junction number, because it is equal to n+sod(n) for n = 687519451591 and 687519451600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73011377 + ... + 73020792.

It is an arithmetic number, because the mean of its divisors is an integer number (55200160260).

Almost surely, 2^687519451652 is an apocalyptic number.

It is an amenable number.

687519451652 is a deficient number, since it is larger than the sum of its proper divisors (637284394588).

687519451652 is a wasteful number, since it uses less digits than its factorization.

687519451652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146032291 (or 146032289 counting only the distinct ones).

The product of its digits is 18144000, while the sum is 59.

The spelling of 687519451652 in words is "six hundred eighty-seven billion, five hundred nineteen million, four hundred fifty-one thousand, six hundred fifty-two".