2705703221 has 12 divisors (see below), whose sum is σ = 3086118252. Its totient is φ = 2349984384.

The previous prime is 2705703211. The next prime is 2705703223. The reversal of 2705703221 is 1223075072.

It can be written as a sum of positive squares in 2 ways, for example, as 1224300100 + 1481403121 = 34990^2 + 38489^2 .

It is not a de Polignac number, because 2705703221 - 2¹⁸ = 2705441077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2705703223) 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 in 11 ways as a sum of consecutive naturals, for example, 771530 + ... + 775028.

It is an arithmetic number, because the mean of its divisors is an integer number (257176521).

Almost surely, 2^2705703221 is an apocalyptic number.

It is an amenable number.

2705703221 is a deficient number, since it is larger than the sum of its proper divisors (380415031).

2705703221 is an frugal number, since it uses more digits than its factorization.

2705703221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7028 (or 3529 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 2705703221 is about 52016.3745468675. The cubic root of 2705703221 is about 1393.4564052607.

Adding to 2705703221 its reverse (1223075072), we get a palindrome (3928778293).

The spelling of 2705703221 in words is "two billion, seven hundred five million, seven hundred three thousand, two hundred twenty-one".