64766566 has 16 divisors (see below), whose sum is σ = 103245840. Its totient is φ = 30365440.

The previous prime is 64766563. The next prime is 64766579. The reversal of 64766566 is 66566746.

64766566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64766563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6165 + ... + 12943.

It is an arithmetic number, because the mean of its divisors is an integer number (6452865).

Almost surely, 2^64766566 is an apocalyptic number.

64766566 is a deficient number, since it is larger than the sum of its proper divisors (38479274).

64766566 is a wasteful number, since it uses less digits than its factorization.

64766566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7079.

The product of its digits is 1088640, while the sum is 46.

The square root of 64766566 is about 8047.7677650389. The cubic root of 64766566 is about 401.5906784700.

The spelling of 64766566 in words is "sixty-four million, seven hundred sixty-six thousand, five hundred sixty-six".