2196871 has 2 divisors, whose sum is σ = 2196872. Its totient is φ = 2196870.

The previous prime is 2196869. The next prime is 2196881. The reversal of 2196871 is 1786912.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2196871 - 2¹ = 2196869 is a prime.

Together with 2196869, 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 (2196841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1098435 + 1098436.

It is an arithmetic number, because the mean of its divisors is an integer number (1098436).

2^2196871 is an apocalyptic number.

2196871 is a deficient number, since it is larger than the sum of its proper divisors (1).

2196871 is an equidigital number, since it uses as much as digits as its factorization.

2196871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 34.

The square root of 2196871 is about 1482.1845364191. The cubic root of 2196871 is about 129.9974555715.

The spelling of 2196871 in words is "two million, one hundred ninety-six thousand, eight hundred seventy-one".