687008391725 has 24 divisors (see below), whose sum is σ = 897236948160. Its totient is φ = 520797537920.

The previous prime is 687008391697. The next prime is 687008391739. The reversal of 687008391725 is 527193800786.

It is not a de Polignac number, because 687008391725 - 2⁸ = 687008391469 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5521640 + ... + 5644689.

It is an arithmetic number, because the mean of its divisors is an integer number (37384872840).

Almost surely, 2^687008391725 is an apocalyptic number.

It is an amenable number.

687008391725 is a deficient number, since it is larger than the sum of its proper divisors (210228556435).

687008391725 is a wasteful number, since it uses less digits than its factorization.

687008391725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11166469 (or 11166464 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 56.

The spelling of 687008391725 in words is "six hundred eighty-seven billion, eight million, three hundred ninety-one thousand, seven hundred twenty-five".