687606216 has 48 divisors (see below), whose sum is σ = 1889504400. Its totient is φ = 208364640.

The previous prime is 687606197. The next prime is 687606251. The reversal of 687606216 is 612606786.

It is a happy number.

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 11 ways as a sum of consecutive naturals, for example, 115486 + ... + 121293.

It is an arithmetic number, because the mean of its divisors is an integer number (39364675).

Almost surely, 2^687606216 is an apocalyptic number.

687606216 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

687606216 is an abundant number, since it is smaller than the sum of its proper divisors (1201898184).

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

687606216 is a wasteful number, since it uses less digits than its factorization.

687606216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236810 (or 236795 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 687606216 is about 26222.2465856761. The cubic root of 687606216 is about 882.6325335490.

The spelling of 687606216 in words is "six hundred eighty-seven million, six hundred six thousand, two hundred sixteen".