688234982 has 16 divisors (see below), whose sum is σ = 1045901472. Its totient is φ = 339621120.

The previous prime is 688234973. The next prime is 688234991. The reversal of 688234982 is 289432886.

It is an interprime number because it is at equal distance from previous prime (688234973) and next prime (688234991).

It is a self number, because there is not a number n which added to its sum of digits gives 688234982.

It is a congruent number.

It is an unprimeable number.

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, 67607 + ... + 77117.

It is an arithmetic number, because the mean of its divisors is an integer number (65368842).

Almost surely, 2^688234982 is an apocalyptic number.

688234982 is a deficient number, since it is larger than the sum of its proper divisors (357666490).

688234982 is a wasteful number, since it uses less digits than its factorization.

688234982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9983.

The product of its digits is 1327104, while the sum is 50.

The square root of 688234982 is about 26234.2330171858. The cubic root of 688234982 is about 882.9014860594.

The spelling of 688234982 in words is "six hundred eighty-eight million, two hundred thirty-four thousand, nine hundred eighty-two".