2221784705 has 48 divisors (see below), whose sum is σ = 3305525760. Its totient is φ = 1426094208.

The previous prime is 2221784687. The next prime is 2221784713. The reversal of 2221784705 is 5074871222.

It is not a de Polignac number, because 2221784705 - 2⁶ = 2221784641 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 260651 + ... + 269039.

It is an arithmetic number, because the mean of its divisors is an integer number (68865120).

Almost surely, 2^2221784705 is an apocalyptic number.

It is an amenable number.

2221784705 is a deficient number, since it is larger than the sum of its proper divisors (1083741055).

2221784705 is a wasteful number, since it uses less digits than its factorization.

2221784705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8478 (or 8471 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 38.

The square root of 2221784705 is about 47135.8112797478. The cubic root of 2221784705 is about 1304.8702336678.

The spelling of 2221784705 in words is "two billion, two hundred twenty-one million, seven hundred eighty-four thousand, seven hundred five".