687564501450 has 48 divisors (see below), whose sum is σ = 1706379326400. Its totient is φ = 183219419520.

The previous prime is 687564501439. The next prime is 687564501469. The reversal of 687564501450 is 54105465786.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 687564501393 and 687564501402.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1428379 + ... + 1848078.

It is an arithmetic number, because the mean of its divisors is an integer number (35549569300).

Almost surely, 2^687564501450 is an apocalyptic number.

687564501450 is an abundant number, since it is smaller than the sum of its proper divisors (1018814824950).

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

687564501450 is a wasteful number, since it uses less digits than its factorization.

687564501450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3277871 (or 3277866 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 51.

The spelling of 687564501450 in words is "six hundred eighty-seven billion, five hundred sixty-four million, five hundred one thousand, four hundred fifty".