687650066334 has 96 divisors (see below), whose sum is σ = 1966815841536. Its totient is φ = 168103906560.

The previous prime is 687650066329. The next prime is 687650066347. The reversal of 687650066334 is 433660056786.

687650066334 is a `hidden beast` number, since 6 + 8 + 76 + 500 + 6 + 63 + 3 + 4 = 666.

It is a super-2 number, since 2×687650066334² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14568792 + ... + 14615915.

It is an arithmetic number, because the mean of its divisors is an integer number (20487665016).

Almost surely, 2^687650066334 is an apocalyptic number.

687650066334 is an abundant number, since it is smaller than the sum of its proper divisors (1279165775202).

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

687650066334 is a wasteful number, since it uses less digits than its factorization.

687650066334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29184750 (or 29184747 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 54.

The spelling of 687650066334 in words is "six hundred eighty-seven billion, six hundred fifty million, sixty-six thousand, three hundred thirty-four".