687108683707 has 2 divisors, whose sum is σ = 687108683708. Its totient is φ = 687108683706.

The previous prime is 687108683693. The next prime is 687108683761. The reversal of 687108683707 is 707386801786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 687108683707 - 2¹¹ = 687108681659 is a prime.

It is not a weakly prime, because it can be changed into another prime (687108683207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343554341853 + 343554341854.

It is an arithmetic number, because the mean of its divisors is an integer number (343554341854).

Almost surely, 2^687108683707 is an apocalyptic number.

687108683707 is a deficient number, since it is larger than the sum of its proper divisors (1).

687108683707 is an equidigital number, since it uses as much as digits as its factorization.

687108683707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18966528, while the sum is 61.

The spelling of 687108683707 in words is "six hundred eighty-seven billion, one hundred eight million, six hundred eighty-three thousand, seven hundred seven".