68668905 has 8 divisors (see below), whose sum is σ = 109870272. Its totient is φ = 36623408.

The previous prime is 68668883. The next prime is 68668913. The reversal of 68668905 is 50986686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68668905 - 2⁶ = 68668841 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2288949 + ... + 2288978.

It is an arithmetic number, because the mean of its divisors is an integer number (13733784).

Almost surely, 2^68668905 is an apocalyptic number.

It is an amenable number.

68668905 is a deficient number, since it is larger than the sum of its proper divisors (41201367).

68668905 is a wasteful number, since it uses less digits than its factorization.

68668905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4577935.

The product of its (nonzero) digits is 622080, while the sum is 48.

The square root of 68668905 is about 8286.6703204604. The cubic root of 68668905 is about 409.4994983304.

The spelling of 68668905 in words is "sixty-eight million, six hundred sixty-eight thousand, nine hundred five".