2081671 has 2 divisors, whose sum is σ = 2081672. Its totient is φ = 2081670.

The previous prime is 2081647. The next prime is 2081687. The reversal of 2081671 is 1761802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2081671 - 2⁹ = 2081159 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2081171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1040835 + 1040836.

It is an arithmetic number, because the mean of its divisors is an integer number (1040836).

2^2081671 is an apocalyptic number.

2081671 is a deficient number, since it is larger than the sum of its proper divisors (1).

2081671 is an equidigital number, since it uses as much as digits as its factorization.

2081671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 2081671 is about 1442.7997088993. The cubic root of 2081671 is about 127.6842600475.

The spelling of 2081671 in words is "two million, eighty-one thousand, six hundred seventy-one".