68193808 has 20 divisors (see below), whose sum is σ = 132267328. Its totient is φ = 34060320.

The previous prime is 68193787. The next prime is 68193823. The reversal of 68193808 is 80839186.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19213 + ... + 22483.

Almost surely, 2^68193808 is an apocalyptic number.

It is an amenable number.

68193808 is a deficient number, since it is larger than the sum of its proper divisors (64073520).

68193808 is a wasteful number, since it uses less digits than its factorization.

68193808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4582 (or 4576 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 68193808 is about 8257.9542260780. The cubic root of 68193808 is about 408.5529156153.

The spelling of 68193808 in words is "sixty-eight million, one hundred ninety-three thousand, eight hundred eight".