2663244065 has 4 divisors (see below), whose sum is σ = 3195892884. Its totient is φ = 2130595248.

The previous prime is 2663244047. The next prime is 2663244109. The reversal of 2663244065 is 5604423662.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1763664016 + 899580049 = 41996^2 + 29993^2 .

It is a cyclic number.

It is not a de Polignac number, because 2663244065 - 2⁸ = 2663243809 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266324402 + ... + 266324411.

It is an arithmetic number, because the mean of its divisors is an integer number (798973221).

Almost surely, 2^2663244065 is an apocalyptic number.

It is an amenable number.

2663244065 is a deficient number, since it is larger than the sum of its proper divisors (532648819).

2663244065 is an equidigital number, since it uses as much as digits as its factorization.

2663244065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532648818.

The product of its (nonzero) digits is 207360, while the sum is 38.

The square root of 2663244065 is about 51606.6281111254. The cubic root of 2663244065 is about 1386.1290198389.

The spelling of 2663244065 in words is "two billion, six hundred sixty-three million, two hundred forty-four thousand, sixty-five".