66704066 has 16 divisors (see below), whose sum is σ = 117548928. Its totient is φ = 27987600.

The previous prime is 66704047. The next prime is 66704101. The reversal of 66704066 is 66040766.

It is a Curzon number.

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, 116330 + ... + 116901.

It is an arithmetic number, because the mean of its divisors is an integer number (7346808).

Almost surely, 2^66704066 is an apocalyptic number.

66704066 is a deficient number, since it is larger than the sum of its proper divisors (50844862).

66704066 is a wasteful number, since it uses less digits than its factorization.

66704066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233257.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 66704066 is about 8167.2557202527. The cubic root of 66704066 is about 405.5559422972. Note that the first 3 decimals are identical.

The spelling of 66704066 in words is "sixty-six million, seven hundred four thousand, sixty-six".