687351168 has 96 divisors (see below), whose sum is σ = 2260511760. Its totient is φ = 196383744.

The previous prime is 687351151. The next prime is 687351187. The reversal of 687351168 is 861153786.

687351168 is a `hidden beast` number, since 6 + 8 + 73 + 511 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34555 + ... + 50682.

Almost surely, 2^687351168 is an apocalyptic number.

It is an amenable number.

687351168 is an abundant number, since it is smaller than the sum of its proper divisors (1573160592).

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

687351168 is a wasteful number, since it uses less digits than its factorization.

687351168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85264 (or 85249 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 687351168 is about 26217.3829357547. The cubic root of 687351168 is about 882.5233908953.

The spelling of 687351168 in words is "six hundred eighty-seven million, three hundred fifty-one thousand, one hundred sixty-eight".