2713721 has 2 divisors, whose sum is σ = 2713722. Its totient is φ = 2713720.

The previous prime is 2713717. The next prime is 2713783. The reversal of 2713721 is 1273172.

2713721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1590121 + 1123600 = 1261^2 + 1060^2 .

It is a cyclic number.

It is not a de Polignac number, because 2713721 - 2² = 2713717 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2773721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1356860 + 1356861.

It is an arithmetic number, because the mean of its divisors is an integer number (1356861).

2^2713721 is an apocalyptic number.

It is an amenable number.

2713721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2713721 is an equidigital number, since it uses as much as digits as its factorization.

2713721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 588, while the sum is 23.

The square root of 2713721 is about 1647.3375488952. The cubic root of 2713721 is about 139.4831452339.

Adding to 2713721 its reverse (1273172), we get a palindrome (3986893).

The spelling of 2713721 in words is "two million, seven hundred thirteen thousand, seven hundred twenty-one".