688159 has 2 divisors, whose sum is σ = 688160. Its totient is φ = 688158.

The previous prime is 688147. The next prime is 688187. The reversal of 688159 is 951886.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 688159 - 2⁷ = 688031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (688139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344079 + 344080.

It is an arithmetic number, because the mean of its divisors is an integer number (344080).

2⁶⁸⁸¹⁵⁹ is an apocalyptic number.

688159 is a deficient number, since it is larger than the sum of its proper divisors (1).

688159 is an equidigital number, since it uses as much as digits as its factorization.

688159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 37.

The square root of 688159 is about 829.5534943571. The cubic root of 688159 is about 88.2868993722.

The spelling of 688159 in words is "six hundred eighty-eight thousand, one hundred fifty-nine".