2205779 has 2 divisors, whose sum is σ = 2205780. Its totient is φ = 2205778.

The previous prime is 2205761. The next prime is 2205787. The reversal of 2205779 is 9775022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2205779 - 2²⁰ = 1157203 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2205719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1102889 + 1102890.

It is an arithmetic number, because the mean of its divisors is an integer number (1102890).

2^2205779 is an apocalyptic number.

2205779 is a deficient number, since it is larger than the sum of its proper divisors (1).

2205779 is an equidigital number, since it uses as much as digits as its factorization.

2205779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 2205779 is about 1485.1865202728. The cubic root of 2205779 is about 130.1729256912.

The spelling of 2205779 in words is "two million, two hundred five thousand, seven hundred seventy-nine".