688087 has 2 divisors, whose sum is σ = 688088. Its totient is φ = 688086.

The previous prime is 688073. The next prime is 688097. The reversal of 688087 is 780886.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 688087 - 2¹¹ = 686039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (688027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344043 + 344044.

It is an arithmetic number, because the mean of its divisors is an integer number (344044).

2⁶⁸⁸⁰⁸⁷ is an apocalyptic number.

688087 is a deficient number, since it is larger than the sum of its proper divisors (1).

688087 is an equidigital number, since it uses as much as digits as its factorization.

688087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 688087 is about 829.5100963822. The cubic root of 688087 is about 88.2838202008.

The spelling of 688087 in words is "six hundred eighty-eight thousand, eighty-seven".