688673480 has 32 divisors (see below), whose sum is σ = 1690381440. Its totient is φ = 250426560.

The previous prime is 688673473. The next prime is 688673483. The reversal of 688673480 is 84376886.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (688673483) 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, 782144 + ... + 783023.

It is an arithmetic number, because the mean of its divisors is an integer number (52824420).

Almost surely, 2^688673480 is an apocalyptic number.

It is an amenable number.

688673480 is an abundant number, since it is smaller than the sum of its proper divisors (1001707960).

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

688673480 is a wasteful number, since it uses less digits than its factorization.

688673480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565189 (or 1565185 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 50.

The square root of 688673480 is about 26242.5890491011. The cubic root of 688673480 is about 883.0889551422.

The spelling of 688673480 in words is "six hundred eighty-eight million, six hundred seventy-three thousand, four hundred eighty".