2104643 has 2 divisors, whose sum is σ = 2104644. Its totient is φ = 2104642.

The previous prime is 2104633. The next prime is 2104657. The reversal of 2104643 is 3464012.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2104643 - 2¹⁴ = 2088259 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2104633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052321 + 1052322.

It is an arithmetic number, because the mean of its divisors is an integer number (1052322).

2^2104643 is an apocalyptic number.

2104643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2104643 is an equidigital number, since it uses as much as digits as its factorization.

2104643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2104643 is about 1450.7387773131. The cubic root of 2104643 is about 128.1522236818.

Adding to 2104643 its reverse (3464012), we get a palindrome (5568655).

The spelling of 2104643 in words is "two million, one hundred four thousand, six hundred forty-three".