2803663 has 2 divisors, whose sum is σ = 2803664. Its totient is φ = 2803662.

The previous prime is 2803651. The next prime is 2803667. The reversal of 2803663 is 3663082.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2803663 is a prime.

2803663 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2803667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1401831 + 1401832.

It is an arithmetic number, because the mean of its divisors is an integer number (1401832).

2^2803663 is an apocalyptic number.

2803663 is a deficient number, since it is larger than the sum of its proper divisors (1).

2803663 is an equidigital number, since it uses as much as digits as its factorization.

2803663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 2803663 is about 1674.4142259310. The cubic root of 2803663 is about 141.0074103712.

The spelling of 2803663 in words is "two million, eight hundred three thousand, six hundred sixty-three".