2808061 has 2 divisors, whose sum is σ = 2808062. Its totient is φ = 2808060.

The previous prime is 2808059. The next prime is 2808079. The reversal of 2808061 is 1608082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2785561 + 22500 = 1669^2 + 150^2 .

It is a cyclic number.

It is not a de Polignac number, because 2808061 - 2¹ = 2808059 is a prime.

Together with 2808059, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2808031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1404030 + 1404031.

It is an arithmetic number, because the mean of its divisors is an integer number (1404031).

2^2808061 is an apocalyptic number.

It is an amenable number.

2808061 is a deficient number, since it is larger than the sum of its proper divisors (1).

2808061 is an equidigital number, since it uses as much as digits as its factorization.

2808061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 2808061 is about 1675.7270064065. The cubic root of 2808061 is about 141.0811028471.

The spelling of 2808061 in words is "two million, eight hundred eight thousand, sixty-one".