688560967 has 2 divisors, whose sum is σ = 688560968. Its totient is φ = 688560966.

The previous prime is 688560941. The next prime is 688560989. The reversal of 688560967 is 769065886.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 688560967 - 2⁷ = 688560839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (688560937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344280483 + 344280484.

It is an arithmetic number, because the mean of its divisors is an integer number (344280484).

Almost surely, 2^688560967 is an apocalyptic number.

688560967 is a deficient number, since it is larger than the sum of its proper divisors (1).

688560967 is an equidigital number, since it uses as much as digits as its factorization.

688560967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The square root of 688560967 is about 26240.4452515578. The cubic root of 688560967 is about 883.0408605556.

The spelling of 688560967 in words is "six hundred eighty-eight million, five hundred sixty thousand, nine hundred sixty-seven".