688343867 has 2 divisors, whose sum is σ = 688343868. Its totient is φ = 688343866.

The previous prime is 688343861. The next prime is 688343897. The reversal of 688343867 is 768343886.

688343867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 688343867 - 2¹⁰ = 688342843 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (688343861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344171933 + 344171934.

It is an arithmetic number, because the mean of its divisors is an integer number (344171934).

Almost surely, 2^688343867 is an apocalyptic number.

688343867 is a deficient number, since it is larger than the sum of its proper divisors (1).

688343867 is an equidigital number, since it uses as much as digits as its factorization.

688343867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4644864, while the sum is 53.

The square root of 688343867 is about 26236.3081816021. The cubic root of 688343867 is about 882.9480446048.

The spelling of 688343867 in words is "six hundred eighty-eight million, three hundred forty-three thousand, eight hundred sixty-seven".