64066066 has 4 divisors (see below), whose sum is σ = 96099102. Its totient is φ = 32033032.

The previous prime is 64066049. The next prime is 64066097. The reversal of 64066066 is 66066046.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 60512841 + 3553225 = 7779^2 + 1885^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 16016515 + ... + 16016518.

Almost surely, 2^64066066 is an apocalyptic number.

64066066 is a deficient number, since it is larger than the sum of its proper divisors (32033036).

64066066 is a wasteful number, since it uses less digits than its factorization.

64066066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32033035.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 64066066 is about 8004.1280599451. The cubic root of 64066066 is about 400.1375901669.

The spelling of 64066066 in words is "sixty-four million, sixty-six thousand, sixty-six", and thus it is an eban number.