163666167 has 16 divisors (see below), whose sum is σ = 250521600. Its totient is φ = 93101472.

The previous prime is 163666163. The next prime is 163666189. The reversal of 163666167 is 761666361.

It is not a de Polignac number, because 163666167 - 2² = 163666163 is a prime.

It is a super-2 number, since 2×163666167² = 53573228440943778, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163666163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12792 + ... + 22157.

It is an arithmetic number, because the mean of its divisors is an integer number (15657600).

Almost surely, 2^163666167 is an apocalyptic number.

163666167 is a deficient number, since it is larger than the sum of its proper divisors (86855433).

163666167 is a wasteful number, since it uses less digits than its factorization.

163666167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35182.

The product of its digits is 163296, while the sum is 42.

The square root of 163666167 is about 12793.2078463535. The cubic root of 163666167 is about 546.9987121569.

The spelling of 163666167 in words is "one hundred sixty-three million, six hundred sixty-six thousand, one hundred sixty-seven".