66804676 has 24 divisors (see below), whose sum is σ = 118935936. Its totient is φ = 32828160.

The previous prime is 66804653. The next prime is 66804677. The reversal of 66804676 is 67640866.

It is not an unprimeable number, because it can be changed into a prime (66804677) 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 7 ways as a sum of consecutive naturals, for example, 64281 + ... + 65311.

It is an arithmetic number, because the mean of its divisors is an integer number (4955664).

Almost surely, 2^66804676 is an apocalyptic number.

It is an amenable number.

66804676 is a deficient number, since it is larger than the sum of its proper divisors (52131260).

66804676 is a wasteful number, since it uses less digits than its factorization.

66804676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299 (or 1297 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 66804676 is about 8173.4127511095. The cubic root of 66804676 is about 405.7597403990.

The spelling of 66804676 in words is "sixty-six million, eight hundred four thousand, six hundred seventy-six".