687304863 has 12 divisors (see below), whose sum is σ = 1134598608. Its totient is φ = 392745600.

The previous prime is 687304831. The next prime is 687304867. The reversal of 687304863 is 368403786.

It is not a de Polignac number, because 687304863 - 2⁵ = 687304831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687304867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5454738 + ... + 5454863.

It is an arithmetic number, because the mean of its divisors is an integer number (94549884).

Almost surely, 2^687304863 is an apocalyptic number.

687304863 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

687304863 is a deficient number, since it is larger than the sum of its proper divisors (447293745).

687304863 is a wasteful number, since it uses less digits than its factorization.

687304863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10909614 (or 10909611 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 687304863 is about 26216.4998235844. The cubic root of 687304863 is about 882.5035727077.

The spelling of 687304863 in words is "six hundred eighty-seven million, three hundred four thousand, eight hundred sixty-three".