2168671 has 2 divisors, whose sum is σ = 2168672. Its totient is φ = 2168670.

The previous prime is 2168669. The next prime is 2168687. The reversal of 2168671 is 1768612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2168671 - 2¹ = 2168669 is a prime.

Together with 2168669, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2168651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1084335 + 1084336.

It is an arithmetic number, because the mean of its divisors is an integer number (1084336).

2^2168671 is an apocalyptic number.

2168671 is a deficient number, since it is larger than the sum of its proper divisors (1).

2168671 is an equidigital number, since it uses as much as digits as its factorization.

2168671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 31.

The square root of 2168671 is about 1472.6408251845. The cubic root of 2168671 is about 129.4388236361.

The spelling of 2168671 in words is "two million, one hundred sixty-eight thousand, six hundred seventy-one".