688080886 has 4 divisors (see below), whose sum is σ = 1032121332. Its totient is φ = 344040442.

The previous prime is 688080881. The next prime is 688080937.

It is a happy number.

688080886 is nontrivially palindromic in base 10.

688080886 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688080881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172020220 + ... + 172020223.

It is an arithmetic number, because the mean of its divisors is an integer number (258030333).

Almost surely, 2^688080886 is an apocalyptic number.

688080886 is a deficient number, since it is larger than the sum of its proper divisors (344040446).

688080886 is a wasteful number, since it uses less digits than its factorization.

688080886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344040445.

The product of its (nonzero) digits is 1179648, while the sum is 52.

The square root of 688080886 is about 26231.2959268123. The cubic root of 688080886 is about 882.8355871798.

The spelling of 688080886 in words is "six hundred eighty-eight million, eighty thousand, eight hundred eighty-six".