688141859 has 8 divisors (see below), whose sum is σ = 696437280. Its totient is φ = 679859136.

The previous prime is 688141849. The next prime is 688141871. The reversal of 688141859 is 958141886.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 688141859 - 2²⁴ = 671364643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (688141819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148394 + ... + 152960.

It is an arithmetic number, because the mean of its divisors is an integer number (87054660).

Almost surely, 2^688141859 is an apocalyptic number.

688141859 is a deficient number, since it is larger than the sum of its proper divisors (8295421).

688141859 is a wasteful number, since it uses less digits than its factorization.

688141859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6349.

The product of its digits is 552960, while the sum is 50.

The square root of 688141859 is about 26232.4581196654. The cubic root of 688141859 is about 882.8616633507.

The spelling of 688141859 in words is "six hundred eighty-eight million, one hundred forty-one thousand, eight hundred fifty-nine".