688314863 has 2 divisors, whose sum is σ = 688314864. Its totient is φ = 688314862.

The previous prime is 688314833. The next prime is 688314871. The reversal of 688314863 is 368413886.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 688314863 - 2¹⁰ = 688313839 is a prime.

It is equal to p_35678945 and since 688314863 and 35678945 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (688314833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344157431 + 344157432.

It is an arithmetic number, because the mean of its divisors is an integer number (344157432).

Almost surely, 2^688314863 is an apocalyptic number.

688314863 is a deficient number, since it is larger than the sum of its proper divisors (1).

688314863 is an equidigital number, since it uses as much as digits as its factorization.

688314863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 663552, while the sum is 47.

The square root of 688314863 is about 26235.7554303283. The cubic root of 688314863 is about 882.9356431554.

The spelling of 688314863 in words is "six hundred eighty-eight million, three hundred fourteen thousand, eight hundred sixty-three".