688000867 has 2 divisors, whose sum is σ = 688000868. Its totient is φ = 688000866.

The previous prime is 688000853. The next prime is 688000889. The reversal of 688000867 is 768000886.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 688000867 - 2²³ = 679612259 is a prime.

It is not a weakly prime, because it can be changed into another prime (688000567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344000433 + 344000434.

It is an arithmetic number, because the mean of its divisors is an integer number (344000434).

Almost surely, 2^688000867 is an apocalyptic number.

688000867 is a deficient number, since it is larger than the sum of its proper divisors (1).

688000867 is an equidigital number, since it uses as much as digits as its factorization.

688000867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 688000867 is about 26229.7706242354. The cubic root of 688000867 is about 882.8013633160.

The spelling of 688000867 in words is "six hundred eighty-eight million, eight hundred sixty-seven", and thus it is an aban number.