2217671 has 2 divisors, whose sum is σ = 2217672. Its totient is φ = 2217670.

The previous prime is 2217643. The next prime is 2217673. The reversal of 2217671 is 1767122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2217671 is a prime.

Together with 2217673, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2217671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2217673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108835 + 1108836.

It is an arithmetic number, because the mean of its divisors is an integer number (1108836).

2^2217671 is an apocalyptic number.

2217671 is a deficient number, since it is larger than the sum of its proper divisors (1).

2217671 is an equidigital number, since it uses as much as digits as its factorization.

2217671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1176, while the sum is 26.

The square root of 2217671 is about 1489.1846762574. The cubic root of 2217671 is about 130.4064399883.

The spelling of 2217671 in words is "two million, two hundred seventeen thousand, six hundred seventy-one".