66064 has 10 divisors (see below), whose sum is σ = 128030. Its totient is φ = 33024.

The previous prime is 66047. The next prime is 66067. The reversal of 66064 is 46066.

It can be written as a sum of positive squares in only one way, i.e., 57600 + 8464 = 240^2 + 92^2 .

It is not an unprimeable number, because it can be changed into a prime (66067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2049 + ... + 2080.

It is an arithmetic number, because the mean of its divisors is an integer number (12803).

2⁶⁶⁰⁶⁴ is an apocalyptic number.

It is an amenable number.

66064 is a deficient number, since it is larger than the sum of its proper divisors (61966).

66064 is a wasteful number, since it uses less digits than its factorization.

66064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4137 (or 4131 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 66064 is about 257.0291812227. The cubic root of 66064 is about 40.4254585802.

The spelling of 66064 in words is "sixty-six thousand, sixty-four", and thus it is an eban number.