688346676 has 36 divisors (see below), whose sum is σ = 1745033472. Its totient is φ = 228783504.

The previous prime is 688346651. The next prime is 688346689. The reversal of 688346676 is 676643886.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×688346676³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 11 ways as a sum of consecutive naturals, for example, 15060 + ... + 40043.

It is an arithmetic number, because the mean of its divisors is an integer number (48473152).

Almost surely, 2^688346676 is an apocalyptic number.

It is an amenable number.

688346676 is an abundant number, since it is smaller than the sum of its proper divisors (1056686796).

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

688346676 is a wasteful number, since it uses less digits than its factorization.

688346676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55460 (or 55455 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 54.

The square root of 688346676 is about 26236.3617142316. The cubic root of 688346676 is about 882.9492456506.

The spelling of 688346676 in words is "six hundred eighty-eight million, three hundred forty-six thousand, six hundred seventy-six".