687130544 has 10 divisors (see below), whose sum is σ = 1331315460. Its totient is φ = 343565264.

The previous prime is 687130541. The next prime is 687130547. The reversal of 687130544 is 445031786.

687130544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (687130541) and next prime (687130547).

It is a junction number, because it is equal to n+sod(n) for n = 687130498 and 687130507.

It is not an unprimeable number, because it can be changed into a prime (687130541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21472814 + ... + 21472845.

It is an arithmetic number, because the mean of its divisors is an integer number (133131546).

Almost surely, 2^687130544 is an apocalyptic number.

It is an amenable number.

687130544 is a deficient number, since it is larger than the sum of its proper divisors (644184916).

687130544 is a wasteful number, since it uses less digits than its factorization.

687130544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42945667 (or 42945661 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 687130544 is about 26213.1750079993. The cubic root of 687130544 is about 882.4289575181.

The spelling of 687130544 in words is "six hundred eighty-seven million, one hundred thirty thousand, five hundred forty-four".