2805653 has 2 divisors, whose sum is σ = 2805654. Its totient is φ = 2805652.

The previous prime is 2805643. The next prime is 2805659. The reversal of 2805653 is 3565082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2798929 + 6724 = 1673^2 + 82^2 .

It is a cyclic number.

It is not a de Polignac number, because 2805653 - 2⁴ = 2805637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2805659) by changing a digit.

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 as a sum of consecutive naturals, namely, 1402826 + 1402827.

It is an arithmetic number, because the mean of its divisors is an integer number (1402827).

2^2805653 is an apocalyptic number.

It is an amenable number.

2805653 is a deficient number, since it is larger than the sum of its proper divisors (1).

2805653 is an equidigital number, since it uses as much as digits as its factorization.

2805653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 2805653 is about 1675.0083581881. The cubic root of 2805653 is about 141.0407641639.

The spelling of 2805653 in words is "two million, eight hundred five thousand, six hundred fifty-three".