68266666 has 8 divisors (see below), whose sum is σ = 110276964. Its totient is φ = 31507680.

The previous prime is 68266663. The next prime is 68266673. The reversal of 68266666 is 66666286.

It can be written as a sum of positive squares in 2 ways, for example, as 48650625 + 19616041 = 6975^2 + 4429^2 .

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

68266666 is a modest number, since divided by 66666 gives 682 as remainder.

It is not an unprimeable number, because it can be changed into a prime (68266661) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1312795 + ... + 1312846.

Almost surely, 2^68266666 is an apocalyptic number.

68266666 is a deficient number, since it is larger than the sum of its proper divisors (42010298).

68266666 is a wasteful number, since it uses less digits than its factorization.

68266666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2625656.

The product of its digits is 746496, while the sum is 46.

The square root of 68266666 is about 8262.3644315656. The cubic root of 68266666 is about 408.6983626128.

The spelling of 68266666 in words is "sixty-eight million, two hundred sixty-six thousand, six hundred sixty-six".