688214380484 has 24 divisors (see below), whose sum is σ = 1275549158520. Its totient is φ = 323782189056.

The previous prime is 688214380463. The next prime is 688214380493. The reversal of 688214380484 is 484083412886.

It can be written as a sum of positive squares in 4 ways, for example, as 296240718400 + 391973662084 = 544280^2 + 626078^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1036757 + ... + 1565660.

It is an arithmetic number, because the mean of its divisors is an integer number (53147881605).

Almost surely, 2^688214380484 is an apocalyptic number.

It is an amenable number.

688214380484 is a deficient number, since it is larger than the sum of its proper divisors (587334778036).

688214380484 is a wasteful number, since it uses less digits than its factorization.

688214380484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2606327 (or 2606325 counting only the distinct ones).

The product of its (nonzero) digits is 9437184, while the sum is 56.

The spelling of 688214380484 in words is "six hundred eighty-eight billion, two hundred fourteen million, three hundred eighty thousand, four hundred eighty-four".