2309663 has 2 divisors, whose sum is σ = 2309664. Its totient is φ = 2309662.

The previous prime is 2309633. The next prime is 2309669. The reversal of 2309663 is 3669032.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2309663 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹⁹ + 3³ + 0 + 9⁵ + 6⁶ + 6⁸ + 3³ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2309669) 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, 1154831 + 1154832.

It is an arithmetic number, because the mean of its divisors is an integer number (1154832).

2^2309663 is an apocalyptic number.

2309663 is a deficient number, since it is larger than the sum of its proper divisors (1).

2309663 is an equidigital number, since it uses as much as digits as its factorization.

2309663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 29.

The square root of 2309663 is about 1519.7575464527. The cubic root of 2309663 is about 132.1852121489.

The spelling of 2309663 in words is "two million, three hundred nine thousand, six hundred sixty-three".