66076664 has 16 divisors (see below), whose sum is σ = 125925720. Its totient is φ = 32496480.

The previous prime is 66076649. The next prime is 66076667. The reversal of 66076664 is 46667066.

It is a super-2 number, since 2×66076664² = 8732251050737792, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66076667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67214 + ... + 68189.

Almost surely, 2^66076664 is an apocalyptic number.

It is an amenable number.

66076664 is a deficient number, since it is larger than the sum of its proper divisors (59849056).

66076664 is a wasteful number, since it uses less digits than its factorization.

66076664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135470 (or 135466 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 41.

The square root of 66076664 is about 8128.7553782852. The cubic root of 66076664 is about 404.2804150639.

The spelling of 66076664 in words is "sixty-six million, seventy-six thousand, six hundred sixty-four".