688000422 has 32 divisors (see below), whose sum is σ = 1458791424. Its totient is φ = 215935200.

The previous prime is 688000337. The next prime is 688000427. The reversal of 688000422 is 224000886.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 688000422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688000427) 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 15 ways as a sum of consecutive naturals, for example, 43104 + ... + 56867.

It is an arithmetic number, because the mean of its divisors is an integer number (45587232).

Almost surely, 2^688000422 is an apocalyptic number.

688000422 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

688000422 is an abundant number, since it is smaller than the sum of its proper divisors (770791002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

688000422 is a wasteful number, since it uses less digits than its factorization.

688000422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100044.

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 688000422 is about 26229.7621415064. The cubic root of 688000422 is about 882.8011729835.

The spelling of 688000422 in words is "six hundred eighty-eight million, four hundred twenty-two", and thus it is an aban number.