688546386484 has 36 divisors (see below), whose sum is σ = 1324573204192. Its totient is φ = 312947925840.

The previous prime is 688546386439. The next prime is 688546386491. The reversal of 688546386484 is 484683645886.

It is a happy number.

It is a super-2 number, since 2×688546386484² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 6016057 + ... + 6129439.

Almost surely, 2^688546386484 is an apocalyptic number.

It is an amenable number.

688546386484 is a deficient number, since it is larger than the sum of its proper divisors (636026817708).

688546386484 is a wasteful number, since it uses less digits than its factorization.

688546386484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125956 (or 125943 counting only the distinct ones).

The product of its digits is 849346560, while the sum is 70.

The spelling of 688546386484 in words is "six hundred eighty-eight billion, five hundred forty-six million, three hundred eighty-six thousand, four hundred eighty-four".