688868303 has 4 divisors (see below), whose sum is σ = 700161288. Its totient is φ = 677575320.

The previous prime is 688868287. The next prime is 688868317. The reversal of 688868303 is 303868886.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 303868886 = 2 ⋅151934443.

It is a cyclic number.

It is not a de Polignac number, because 688868303 - 2⁴ = 688868287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688868333) 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, 5646401 + ... + 5646522.

It is an arithmetic number, because the mean of its divisors is an integer number (175040322).

Almost surely, 2^688868303 is an apocalyptic number.

688868303 is a deficient number, since it is larger than the sum of its proper divisors (11292985).

688868303 is a wasteful number, since it uses less digits than its factorization.

688868303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11292984.

The product of its (nonzero) digits is 1327104, while the sum is 50.

The square root of 688868303 is about 26246.3007488674. The cubic root of 688868303 is about 883.1722214135.

The spelling of 688868303 in words is "six hundred eighty-eight million, eight hundred sixty-eight thousand, three hundred three".