687025476887 has 2 divisors, whose sum is σ = 687025476888. Its totient is φ = 687025476886.

The previous prime is 687025476881. The next prime is 687025476941. The reversal of 687025476887 is 788674520786.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-687025476887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (687025476881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343512738443 + 343512738444.

It is an arithmetic number, because the mean of its divisors is an integer number (343512738444).

Almost surely, 2^687025476887 is an apocalyptic number.

687025476887 is a deficient number, since it is larger than the sum of its proper divisors (1).

687025476887 is an equidigital number, since it uses as much as digits as its factorization.

687025476887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252887040, while the sum is 68.

The spelling of 687025476887 in words is "six hundred eighty-seven billion, twenty-five million, four hundred seventy-six thousand, eight hundred eighty-seven".