66163756 has 12 divisors (see below), whose sum is σ = 118479592. Its totient is φ = 32312448.

The previous prime is 66163753. The next prime is 66163789. The reversal of 66163756 is 65736166.

66163756 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (66163751) 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 3 ways as a sum of consecutive naturals, for example, 192165 + ... + 192508.

Almost surely, 2^66163756 is an apocalyptic number.

It is an amenable number.

66163756 is a deficient number, since it is larger than the sum of its proper divisors (52315836).

66163756 is a wasteful number, since it uses less digits than its factorization.

66163756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384720 (or 384718 counting only the distinct ones).

The product of its digits is 136080, while the sum is 40.

The square root of 66163756 is about 8134.1106459158. The cubic root of 66163756 is about 404.4579569767.

The spelling of 66163756 in words is "sixty-six million, one hundred sixty-three thousand, seven hundred fifty-six".