68012666 has 32 divisors (see below), whose sum is σ = 110972160. Its totient is φ = 31159296.

The previous prime is 68012653. The next prime is 68012683. The reversal of 68012666 is 66621086.

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, 201650 + ... + 201986.

It is an arithmetic number, because the mean of its divisors is an integer number (3467880).

Almost surely, 2^68012666 is an apocalyptic number.

68012666 is a deficient number, since it is larger than the sum of its proper divisors (42959494).

68012666 is a wasteful number, since it uses less digits than its factorization.

68012666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 68012666 is about 8246.9792045330. The cubic root of 68012666 is about 408.1908508947.

The spelling of 68012666 in words is "sixty-eight million, twelve thousand, six hundred sixty-six".