66800068 has 12 divisors (see below), whose sum is σ = 117455632. Its totient is φ = 33241320.

The previous prime is 66800057. The next prime is 66800077. The reversal of 66800068 is 86000866.

It is a happy number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38730 + ... + 40417.

Almost surely, 2^66800068 is an apocalyptic number.

It is an amenable number.

66800068 is a deficient number, since it is larger than the sum of its proper divisors (50655564).

66800068 is a wasteful number, since it uses less digits than its factorization.

66800068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79362 (or 79360 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 66800068 is about 8173.1308566546. The cubic root of 66800068 is about 405.7504107932.

The spelling of 66800068 in words is "sixty-six million, eight hundred thousand, sixty-eight".