2220671 has 2 divisors, whose sum is σ = 2220672. Its totient is φ = 2220670.

The previous prime is 2220661. The next prime is 2220697. The reversal of 2220671 is 1760222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2220671 - 2¹⁰ = 2219647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2220661) 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, 1110335 + 1110336.

It is an arithmetic number, because the mean of its divisors is an integer number (1110336).

2^2220671 is an apocalyptic number.

2220671 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220671 is an equidigital number, since it uses as much as digits as its factorization.

2220671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 2220671 is about 1490.1915984195. The cubic root of 2220671 is about 130.4652168226.

Adding to 2220671 its reverse (1760222), we get a palindrome (3980893).

The spelling of 2220671 in words is "two million, two hundred twenty thousand, six hundred seventy-one".