687607456 has 24 divisors (see below), whose sum is σ = 1356838560. Its totient is φ = 343013568.

The previous prime is 687607411. The next prime is 687607457. The reversal of 687607456 is 654706786.

It is not an unprimeable number, because it can be changed into a prime (687607457) 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, 10426 + ... + 38521.

It is an arithmetic number, because the mean of its divisors is an integer number (56534940).

Almost surely, 2^687607456 is an apocalyptic number.

It is an amenable number.

687607456 is a deficient number, since it is larger than the sum of its proper divisors (669231104).

687607456 is a wasteful number, since it uses less digits than its factorization.

687607456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49396 (or 49388 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 49.

The square root of 687607456 is about 26222.2702297112. The cubic root of 687607456 is about 882.6330641161.

The spelling of 687607456 in words is "six hundred eighty-seven million, six hundred seven thousand, four hundred fifty-six".