2723665321 has 16 divisors (see below), whose sum is σ = 2986099200. Its totient is φ = 2468884608.

The previous prime is 2723665277. The next prime is 2723665327. The reversal of 2723665321 is 1235663272.

It is a cyclic number.

It is not a de Polignac number, because 2723665321 - 2¹¹ = 2723663273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2723665327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1233000 + ... + 1235206.

It is an arithmetic number, because the mean of its divisors is an integer number (186631200).

Almost surely, 2^2723665321 is an apocalyptic number.

It is an amenable number.

2723665321 is a deficient number, since it is larger than the sum of its proper divisors (262433879).

2723665321 is a wasteful number, since it uses less digits than its factorization.

2723665321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3888.

The product of its digits is 90720, while the sum is 37.

The square root of 2723665321 is about 52188.7470725251. The cubic root of 2723665321 is about 1396.5331432767.

The spelling of 2723665321 in words is "two billion, seven hundred twenty-three million, six hundred sixty-five thousand, three hundred twenty-one".