688403433712 has 40 divisors (see below), whose sum is σ = 1355961928160. Its totient is φ = 338480398080.

The previous prime is 688403433709. The next prime is 688403433713. The reversal of 688403433712 is 217334304886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688403433713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4237114 + ... + 4396582.

It is an arithmetic number, because the mean of its divisors is an integer number (33899048204).

Almost surely, 2^688403433712 is an apocalyptic number.

It is an amenable number.

688403433712 is a deficient number, since it is larger than the sum of its proper divisors (667558494448).

688403433712 is a wasteful number, since it uses less digits than its factorization.

688403433712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163961 (or 163955 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 49.

The spelling of 688403433712 in words is "six hundred eighty-eight billion, four hundred three million, four hundred thirty-three thousand, seven hundred twelve".