66163071 has 16 divisors (see below), whose sum is σ = 95295200. Its totient is φ = 40590720.

The previous prime is 66163061. The next prime is 66163079. The reversal of 66163071 is 17036166.

It is not a de Polignac number, because 66163071 - 2¹⁵ = 66130303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66163079) 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 15 ways as a sum of consecutive naturals, for example, 11181 + ... + 16041.

It is an arithmetic number, because the mean of its divisors is an integer number (5955950).

Almost surely, 2^66163071 is an apocalyptic number.

66163071 is a deficient number, since it is larger than the sum of its proper divisors (29132129).

66163071 is a wasteful number, since it uses less digits than its factorization.

66163071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5226.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 66163071 is about 8134.0685391752. The cubic root of 66163071 is about 404.4565611740.

The spelling of 66163071 in words is "sixty-six million, one hundred sixty-three thousand, seventy-one".