688875223742 has 4 divisors (see below), whose sum is σ = 1033312835616. Its totient is φ = 344437611870.

The previous prime is 688875223733. The next prime is 688875223747. The reversal of 688875223742 is 247322578886.

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 (688875223747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172218805934 + ... + 172218805937.

It is an arithmetic number, because the mean of its divisors is an integer number (258328208904).

Almost surely, 2^688875223742 is an apocalyptic number.

688875223742 is a deficient number, since it is larger than the sum of its proper divisors (344437611874).

688875223742 is a wasteful number, since it uses less digits than its factorization.

688875223742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344437611873.

The product of its digits is 72253440, while the sum is 62.

The spelling of 688875223742 in words is "six hundred eighty-eight billion, eight hundred seventy-five million, two hundred twenty-three thousand, seven hundred forty-two".