68943188 has 6 divisors (see below), whose sum is σ = 120650586. Its totient is φ = 34471592.

The previous prime is 68943151. The next prime is 68943197. The reversal of 68943188 is 88134986.

It can be written as a sum of positive squares in only one way, i.e., 44063044 + 24880144 = 6638^2 + 4988^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8617895 + ... + 8617902.

It is an arithmetic number, because the mean of its divisors is an integer number (20108431).

Almost surely, 2^68943188 is an apocalyptic number.

It is an amenable number.

68943188 is a deficient number, since it is larger than the sum of its proper divisors (51707398).

68943188 is a wasteful number, since it uses less digits than its factorization.

68943188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17235801 (or 17235799 counting only the distinct ones).

The product of its digits is 331776, while the sum is 47.

The square root of 68943188 is about 8303.2034781764. The cubic root of 68943188 is about 410.0439928999.

The spelling of 68943188 in words is "sixty-eight million, nine hundred forty-three thousand, one hundred eighty-eight".