687839696 has 40 divisors (see below), whose sum is σ = 1371802080. Its totient is φ = 333922176.

The previous prime is 687839651. The next prime is 687839699. The reversal of 687839696 is 696938786.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687839699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116135 + ... + 121913.

It is an arithmetic number, because the mean of its divisors is an integer number (34295052).

Almost surely, 2^687839696 is an apocalyptic number.

It is an amenable number.

687839696 is a deficient number, since it is larger than the sum of its proper divisors (683962384).

687839696 is a wasteful number, since it uses less digits than its factorization.

687839696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6003 (or 5997 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 62.

The square root of 687839696 is about 26226.6981528365. The cubic root of 687839696 is about 882.7324229522.

The spelling of 687839696 in words is "six hundred eighty-seven million, eight hundred thirty-nine thousand, six hundred ninety-six".