688428303 has 24 divisors (see below), whose sum is σ = 960587280. Its totient is φ = 438557952.

The previous prime is 688428281. The next prime is 688428331. The reversal of 688428303 is 303824886.

It is not a de Polignac number, because 688428303 - 2⁹ = 688427791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688428353) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7097151 + ... + 7097247.

It is an arithmetic number, because the mean of its divisors is an integer number (40024470).

Almost surely, 2^688428303 is an apocalyptic number.

688428303 is a deficient number, since it is larger than the sum of its proper divisors (272158977).

688428303 is an frugal number, since it uses more digits than its factorization.

688428303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 688428303 is about 26237.9172763388. The cubic root of 688428303 is about 882.9841455307.

The spelling of 688428303 in words is "six hundred eighty-eight million, four hundred twenty-eight thousand, three hundred three".