687250312 has 16 divisors (see below), whose sum is σ = 1472679360. Its totient is φ = 294535824.

The previous prime is 687250307. The next prime is 687250331. The reversal of 687250312 is 213052786.

It is a happy number.

687250312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6136108 + ... + 6136219.

It is an arithmetic number, because the mean of its divisors is an integer number (92042460).

Almost surely, 2^687250312 is an apocalyptic number.

It is an amenable number.

687250312 is an abundant number, since it is smaller than the sum of its proper divisors (785429048).

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

687250312 is a wasteful number, since it uses less digits than its factorization.

687250312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12272340 (or 12272336 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 687250312 is about 26215.4594085246. The cubic root of 687250312 is about 882.4802241527.

The spelling of 687250312 in words is "six hundred eighty-seven million, two hundred fifty thousand, three hundred twelve".