688767312 has 40 divisors (see below), whose sum is σ = 1784057440. Its totient is φ = 228977280.

The previous prime is 688767311. The next prime is 688767349. The reversal of 688767312 is 213767886.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688767311) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 739 + ... + 37122.

It is an arithmetic number, because the mean of its divisors is an integer number (44601436).

Almost surely, 2^688767312 is an apocalyptic number.

It is an amenable number.

688767312 is an abundant number, since it is smaller than the sum of its proper divisors (1095290128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

688767312 is a wasteful number, since it uses less digits than its factorization.

688767312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38251 (or 38245 counting only the distinct ones).

The product of its digits is 677376, while the sum is 48.

The square root of 688767312 is about 26244.3767691290. The cubic root of 688767312 is about 883.1290603794.

The spelling of 688767312 in words is "six hundred eighty-eight million, seven hundred sixty-seven thousand, three hundred twelve".