2721163684 has 12 divisors (see below), whose sum is σ = 5042156364. Its totient is φ = 1280547584.

The previous prime is 2721163639. The next prime is 2721163703. The reversal of 2721163684 is 4863611272.

It can be written as a sum of positive squares in 2 ways, for example, as 1511654400 + 1209509284 = 38880^2 + 34778^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 20008489 + ... + 20008624.

It is an arithmetic number, because the mean of its divisors is an integer number (420179697).

Almost surely, 2^2721163684 is an apocalyptic number.

It is an amenable number.

2721163684 is a deficient number, since it is larger than the sum of its proper divisors (2320992680).

2721163684 is a wasteful number, since it uses less digits than its factorization.

2721163684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40017134 (or 40017132 counting only the distinct ones).

The product of its digits is 96768, while the sum is 40.

The square root of 2721163684 is about 52164.7743597152. The cubic root of 2721163684 is about 1396.1054488863.

The spelling of 2721163684 in words is "two billion, seven hundred twenty-one million, one hundred sixty-three thousand, six hundred eighty-four".