687600740 has 24 divisors (see below), whose sum is σ = 1444528512. Its totient is φ = 274932320.

The previous prime is 687600737. The next prime is 687600761. The reversal of 687600740 is 47006786.

It is a junction number, because it is equal to n+sod(n) for n = 687600694 and 687600703.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63095 + ... + 73185.

It is an arithmetic number, because the mean of its divisors is an integer number (60188688).

Almost surely, 2^687600740 is an apocalyptic number.

It is an amenable number.

687600740 is an abundant number, since it is smaller than the sum of its proper divisors (756927772).

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

687600740 is a wasteful number, since it uses less digits than its factorization.

687600740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13507 (or 13505 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 687600740 is about 26222.1421703110. The cubic root of 687600740 is about 882.6301904887.

The spelling of 687600740 in words is "six hundred eighty-seven million, six hundred thousand, seven hundred forty".