68125688 has 8 divisors (see below), whose sum is σ = 127735680. Its totient is φ = 34062840.

The previous prime is 68125661. The next prime is 68125691. The reversal of 68125688 is 88652186.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×68125688² = 9282218730946688, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 4257848 + ... + 4257863.

It is an arithmetic number, because the mean of its divisors is an integer number (15966960).

Almost surely, 2^68125688 is an apocalyptic number.

It is an amenable number.

68125688 is a deficient number, since it is larger than the sum of its proper divisors (59609992).

68125688 is a wasteful number, since it uses less digits than its factorization.

68125688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8515717 (or 8515713 counting only the distinct ones).

The product of its digits is 184320, while the sum is 44.

The square root of 68125688 is about 8253.8286873426. The cubic root of 68125688 is about 408.4168333844.

The spelling of 68125688 in words is "sixty-eight million, one hundred twenty-five thousand, six hundred eighty-eight".