2664344563 has 2 divisors, whose sum is σ = 2664344564. Its totient is φ = 2664344562.

The previous prime is 2664344561. The next prime is 2664344591. The reversal of 2664344563 is 3654434662.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2664344563 - 2¹ = 2664344561 is a prime.

Together with 2664344561, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2664344561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332172281 + 1332172282.

It is an arithmetic number, because the mean of its divisors is an integer number (1332172282).

Almost surely, 2^2664344563 is an apocalyptic number.

2664344563 is a deficient number, since it is larger than the sum of its proper divisors (1).

2664344563 is an equidigital number, since it uses as much as digits as its factorization.

2664344563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1244160, while the sum is 43.

The square root of 2664344563 is about 51617.2893805942. The cubic root of 2664344563 is about 1386.3199176204.

Subtracting 2664344563 from its reverse (3654434662), we obtain a palindrome (990090099).

The spelling of 2664344563 in words is "two billion, six hundred sixty-four million, three hundred forty-four thousand, five hundred sixty-three".