688353742 has 8 divisors (see below), whose sum is σ = 1032874776. Its totient is φ = 344062152.

The previous prime is 688353737. The next prime is 688353751. The reversal of 688353742 is 247353886.

688353742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 688353692 and 688353701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49653 + ... + 61984.

It is an arithmetic number, because the mean of its divisors is an integer number (129109347).

Almost surely, 2^688353742 is an apocalyptic number.

688353742 is a deficient number, since it is larger than the sum of its proper divisors (344521034).

688353742 is a wasteful number, since it uses less digits than its factorization.

688353742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114722.

The product of its digits is 967680, while the sum is 46.

The square root of 688353742 is about 26236.4963743256. The cubic root of 688353742 is about 882.9522668502.

The spelling of 688353742 in words is "six hundred eighty-eight million, three hundred fifty-three thousand, seven hundred forty-two".