687354760 has 16 divisors (see below), whose sum is σ = 1546548300. Its totient is φ = 274941888.

The previous prime is 687354757. The next prime is 687354769. The reversal of 687354760 is 67453786.

It can be written as a sum of positive squares in 2 ways, for example, as 630110404 + 57244356 = 25102^2 + 7566^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 687354760.

It is not an unprimeable number, because it can be changed into a prime (687354769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8591895 + ... + 8591974.

Almost surely, 2^687354760 is an apocalyptic number.

It is an amenable number.

687354760 is an abundant number, since it is smaller than the sum of its proper divisors (859193540).

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

687354760 is a wasteful number, since it uses less digits than its factorization.

687354760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17183880 (or 17183876 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 46.

The square root of 687354760 is about 26217.4514398330. The cubic root of 687354760 is about 882.5249282068.

The spelling of 687354760 in words is "six hundred eighty-seven million, three hundred fifty-four thousand, seven hundred sixty".