66664364 has 12 divisors (see below), whose sum is σ = 125636784. Its totient is φ = 30768144.

The previous prime is 66664357. The next prime is 66664391. The reversal of 66664364 is 46346666.

It is an unprimeable number.

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, 640952 + ... + 641055.

It is an arithmetic number, because the mean of its divisors is an integer number (10469732).

Almost surely, 2^66664364 is an apocalyptic number.

It is an amenable number.

66664364 is a deficient number, since it is larger than the sum of its proper divisors (58972420).

66664364 is a wasteful number, since it uses less digits than its factorization.

66664364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282024 (or 1282022 counting only the distinct ones).

The product of its digits is 373248, while the sum is 41.

The square root of 66664364 is about 8164.8247991001. The cubic root of 66664364 is about 405.4754645565.

The spelling of 66664364 in words is "sixty-six million, six hundred sixty-four thousand, three hundred sixty-four".