687596540408 has 8 divisors (see below), whose sum is σ = 1289243513280. Its totient is φ = 343798270200.

The previous prime is 687596540383. The next prime is 687596540431. The reversal of 687596540408 is 804045695786.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42974783768 + ... + 42974783783.

It is an arithmetic number, because the mean of its divisors is an integer number (161155439160).

Almost surely, 2^687596540408 is an apocalyptic number.

It is an amenable number.

687596540408 is a deficient number, since it is larger than the sum of its proper divisors (601646972872).

687596540408 is a wasteful number, since it uses less digits than its factorization.

687596540408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85949567557 (or 85949567553 counting only the distinct ones).

The product of its (nonzero) digits is 58060800, while the sum is 62.

The spelling of 687596540408 in words is "six hundred eighty-seven billion, five hundred ninety-six million, five hundred forty thousand, four hundred eight".