687563707 has 2 divisors, whose sum is σ = 687563708. Its totient is φ = 687563706.

The previous prime is 687563699. The next prime is 687563741. The reversal of 687563707 is 707365786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 687563707 - 2³ = 687563699 is a prime.

It is not a weakly prime, because it can be changed into another prime (687563207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343781853 + 343781854.

It is an arithmetic number, because the mean of its divisors is an integer number (343781854).

Almost surely, 2^687563707 is an apocalyptic number.

687563707 is a deficient number, since it is larger than the sum of its proper divisors (1).

687563707 is an equidigital number, since it uses as much as digits as its factorization.

687563707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1481760, while the sum is 49.

The square root of 687563707 is about 26221.4360209352. The cubic root of 687563707 is about 882.6143445533.

The spelling of 687563707 in words is "six hundred eighty-seven million, five hundred sixty-three thousand, seven hundred seven".