2721671 has 2 divisors, whose sum is σ = 2721672. Its totient is φ = 2721670.

The previous prime is 2721619. The next prime is 2721701. The reversal of 2721671 is 1761272.

2721671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2721671 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2721671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2721371) 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, 1360835 + 1360836.

It is an arithmetic number, because the mean of its divisors is an integer number (1360836).

2^2721671 is an apocalyptic number.

2721671 is a deficient number, since it is larger than the sum of its proper divisors (1).

2721671 is an equidigital number, since it uses as much as digits as its factorization.

2721671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1176, while the sum is 26.

The square root of 2721671 is about 1649.7487687524. The cubic root of 2721671 is about 139.6192203758.

The spelling of 2721671 in words is "two million, seven hundred twenty-one thousand, six hundred seventy-one".