68668805 has 16 divisors (see below), whose sum is σ = 83813184. Its totient is φ = 54001920.

The previous prime is 68668799. The next prime is 68668811. The reversal of 68668805 is 50886686.

It is an interprime number because it is at equal distance from previous prime (68668799) and next prime (68668811).

It is not a de Polignac number, because 68668805 - 2⁶ = 68668741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68668805.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139610 + ... + 140100.

It is an arithmetic number, because the mean of its divisors is an integer number (5238324).

Almost surely, 2^68668805 is an apocalyptic number.

It is an amenable number.

68668805 is a deficient number, since it is larger than the sum of its proper divisors (15144379).

68668805 is a wasteful number, since it uses less digits than its factorization.

68668805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916.

The product of its (nonzero) digits is 552960, while the sum is 47.

The square root of 68668805 is about 8286.6642866717. The cubic root of 68668805 is about 409.4992995506.

The spelling of 68668805 in words is "sixty-eight million, six hundred sixty-eight thousand, eight hundred five".