68121184 has 24 divisors (see below), whose sum is σ = 134332128. Its totient is φ = 34005120.

The previous prime is 68121173. The next prime is 68121187. The reversal of 68121184 is 48112186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68121187) 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 3 ways as a sum of consecutive naturals, for example, 24169 + ... + 26839.

It is an arithmetic number, because the mean of its divisors is an integer number (5597172).

Almost surely, 2^68121184 is an apocalyptic number.

It is an amenable number.

68121184 is a deficient number, since it is larger than the sum of its proper divisors (66210944).

68121184 is a wasteful number, since it uses less digits than its factorization.

68121184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3478 (or 3470 counting only the distinct ones).

The product of its digits is 3072, while the sum is 31.

The square root of 68121184 is about 8253.5558397578. Note that the first 3 decimals coincide. The cubic root of 68121184 is about 408.4078326192.

The spelling of 68121184 in words is "sixty-eight million, one hundred twenty-one thousand, one hundred eighty-four".