2649863 has 2 divisors, whose sum is σ = 2649864. Its totient is φ = 2649862.

The previous prime is 2649851. The next prime is 2649869. The reversal of 2649863 is 3689462.

2649863 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 not a de Polignac number, because 2649863 - 2⁶ = 2649799 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2649869) 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, 1324931 + 1324932.

It is an arithmetic number, because the mean of its divisors is an integer number (1324932).

2^2649863 is an apocalyptic number.

2649863 is a deficient number, since it is larger than the sum of its proper divisors (1).

2649863 is an equidigital number, since it uses as much as digits as its factorization.

2649863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 38.

The square root of 2649863 is about 1627.8399798506. The cubic root of 2649863 is about 138.3803656143.

The spelling of 2649863 in words is "two million, six hundred forty-nine thousand, eight hundred sixty-three".