66563164 has 12 divisors (see below), whose sum is σ = 116547984. Its totient is φ = 33263744.

The previous prime is 66563089. The next prime is 66563179. The reversal of 66563164 is 46136566.

It is a congruent number.

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, 7497 + ... + 13759.

It is an arithmetic number, because the mean of its divisors is an integer number (9712332).

Almost surely, 2^66563164 is an apocalyptic number.

It is an amenable number.

66563164 is a deficient number, since it is larger than the sum of its proper divisors (49984820).

66563164 is a wasteful number, since it uses less digits than its factorization.

66563164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8924 (or 8922 counting only the distinct ones).

The product of its digits is 77760, while the sum is 37.

The square root of 66563164 is about 8158.6251292727. The cubic root of 66563164 is about 405.2701829735.

The spelling of 66563164 in words is "sixty-six million, five hundred sixty-three thousand, one hundred sixty-four".