68093668 has 6 divisors (see below), whose sum is σ = 119163926. Its totient is φ = 34046832.

The previous prime is 68093657. The next prime is 68093689. The reversal of 68093668 is 86639086.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 63393444 + 4700224 = 7962^2 + 2168^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 8511705 + ... + 8511712.

Almost surely, 2^68093668 is an apocalyptic number.

It is an amenable number.

68093668 is a deficient number, since it is larger than the sum of its proper divisors (51070258).

68093668 is a wasteful number, since it uses less digits than its factorization.

68093668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17023421 (or 17023419 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 68093668 is about 8251.8887534915. Note that the first 3 decimals coincide. The cubic root of 68093668 is about 408.3528362012.

The spelling of 68093668 in words is "sixty-eight million, ninety-three thousand, six hundred sixty-eight".