687712568948 has 24 divisors (see below), whose sum is σ = 1257238910592. Its totient is φ = 328535165024.

The previous prime is 687712568947. The next prime is 687712568957. The reversal of 687712568948 is 849865217786.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687712568947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4132115 + ... + 4295322.

It is an arithmetic number, because the mean of its divisors is an integer number (52384954608).

Almost surely, 2^687712568948 is an apocalyptic number.

It is an amenable number.

687712568948 is a deficient number, since it is larger than the sum of its proper divisors (569526341644).

687712568948 is a wasteful number, since it uses less digits than its factorization.

687712568948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8428351 (or 8428349 counting only the distinct ones).

The product of its digits is 325140480, while the sum is 71.

The spelling of 687712568948 in words is "six hundred eighty-seven billion, seven hundred twelve million, five hundred sixty-eight thousand, nine hundred forty-eight".