687712048 has 40 divisors (see below), whose sum is σ = 1367633696. Its totient is φ = 334886400.

The previous prime is 687712043. The next prime is 687712063. The reversal of 687712048 is 840217786.

It is a junction number, because it is equal to n+sod(n) for n = 687711995 and 687712013.

It is not an unprimeable number, because it can be changed into a prime (687712043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97108 + ... + 103948.

Almost surely, 2^687712048 is an apocalyptic number.

It is an amenable number.

687712048 is a deficient number, since it is larger than the sum of its proper divisors (679921648).

687712048 is a wasteful number, since it uses less digits than its factorization.

687712048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7013 (or 7007 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 687712048 is about 26224.2644892092. The cubic root of 687712048 is about 882.6778142985.

The spelling of 687712048 in words is "six hundred eighty-seven million, seven hundred twelve thousand, forty-eight".