163667671 has 2 divisors, whose sum is σ = 163667672. Its totient is φ = 163667670.

The previous prime is 163667659. The next prime is 163667689. The reversal of 163667671 is 176766361.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 163667671 - 2⁵ = 163667639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163667071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81833835 + 81833836.

It is an arithmetic number, because the mean of its divisors is an integer number (81833836).

Almost surely, 2^163667671 is an apocalyptic number.

163667671 is a deficient number, since it is larger than the sum of its proper divisors (1).

163667671 is an equidigital number, since it uses as much as digits as its factorization.

163667671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 43.

The square root of 163667671 is about 12793.2666274099. The cubic root of 163667671 is about 547.0003876886. Note that the first 3 decimals are identical.

The spelling of 163667671 in words is "one hundred sixty-three million, six hundred sixty-seven thousand, six hundred seventy-one".