71166163 has 4 divisors (see below), whose sum is σ = 74260368. Its totient is φ = 68071960.

The previous prime is 71166113. The next prime is 71166187. The reversal of 71166163 is 36166117.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36166117 = 13 ⋅2782009.

It is a cyclic number.

It is not a de Polignac number, because 71166163 - 2⁹ = 71165651 is a prime.

It is a super-2 number, since 2×71166163² = 10129245512285138, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71166113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1547068 + ... + 1547113.

It is an arithmetic number, because the mean of its divisors is an integer number (18565092).

Almost surely, 2^71166163 is an apocalyptic number.

71166163 is a deficient number, since it is larger than the sum of its proper divisors (3094205).

71166163 is a wasteful number, since it uses less digits than its factorization.

71166163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3094204.

The product of its digits is 4536, while the sum is 31.

The square root of 71166163 is about 8436.0039710754. The cubic root of 71166163 is about 414.4045517698.

The spelling of 71166163 in words is "seventy-one million, one hundred sixty-six thousand, one hundred sixty-three".