687768304 has 10 divisors (see below), whose sum is σ = 1332551120. Its totient is φ = 343884144.

The previous prime is 687768283. The next prime is 687768313. The reversal of 687768304 is 403867786.

687768304 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21492744 + ... + 21492775.

It is an arithmetic number, because the mean of its divisors is an integer number (133255112).

Almost surely, 2^687768304 is an apocalyptic number.

It is an amenable number.

687768304 is a deficient number, since it is larger than the sum of its proper divisors (644782816).

687768304 is a wasteful number, since it uses less digits than its factorization.

687768304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42985527 (or 42985521 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 49.

The square root of 687768304 is about 26225.3370617043. The cubic root of 687768304 is about 882.7018818179.

The spelling of 687768304 in words is "six hundred eighty-seven million, seven hundred sixty-eight thousand, three hundred four".