687072843808 has 48 divisors (see below), whose sum is σ = 1458488747520. Its totient is φ = 316726937856.

The previous prime is 687072843773. The next prime is 687072843827. The reversal of 687072843808 is 808348270786.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 654528 + ... + 1342591.

It is an arithmetic number, because the mean of its divisors is an integer number (30385182240).

Almost surely, 2^687072843808 is an apocalyptic number.

It is an amenable number.

687072843808 is an abundant number, since it is smaller than the sum of its proper divisors (771415903712).

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

687072843808 is a wasteful number, since it uses less digits than its factorization.

687072843808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997969 (or 1997961 counting only the distinct ones).

The product of its (nonzero) digits is 28901376, while the sum is 61.

The spelling of 687072843808 in words is "six hundred eighty-seven billion, seventy-two million, eight hundred forty-three thousand, eight hundred eight".