688879222 has 8 divisors (see below), whose sum is σ = 1050258672. Its totient is φ = 338793000.

The previous prime is 688879211. The next prime is 688879229. The reversal of 688879222 is 222978886.

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

It is a self number, because there is not a number n which added to its sum of digits gives 688879222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688879229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2823154 + ... + 2823397.

It is an arithmetic number, because the mean of its divisors is an integer number (131282334).

Almost surely, 2^688879222 is an apocalyptic number.

688879222 is a deficient number, since it is larger than the sum of its proper divisors (361379450).

688879222 is a wasteful number, since it uses less digits than its factorization.

688879222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5646614.

The product of its digits is 1548288, while the sum is 52.

The square root of 688879222 is about 26246.5087583092. The cubic root of 688879222 is about 883.1768876690.

The spelling of 688879222 in words is "six hundred eighty-eight million, eight hundred seventy-nine thousand, two hundred twenty-two".