2668759633 has 4 divisors (see below), whose sum is σ = 2685758260. Its totient is φ = 2651761008.

The previous prime is 2668759631. The next prime is 2668759657. The reversal of 2668759633 is 3369578662.

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 1131178689 + 1537580944 = 33633^2 + 39212^2 .

It is a cyclic number.

It is not a de Polignac number, because 2668759633 - 2¹ = 2668759631 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2668759631) 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 in 3 ways as a sum of consecutive naturals, for example, 8499078 + ... + 8499391.

It is an arithmetic number, because the mean of its divisors is an integer number (671439565).

Almost surely, 2^2668759633 is an apocalyptic number.

It is an amenable number.

2668759633 is a deficient number, since it is larger than the sum of its proper divisors (16998627).

2668759633 is a wasteful number, since it uses less digits than its factorization.

2668759633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16998626.

The product of its digits is 9797760, while the sum is 55.

The square root of 2668759633 is about 51660.0390340542. The cubic root of 2668759633 is about 1387.0852492788.

It can be divided in two parts, 26687 and 59633, that added together give a triangular number (86320 = T₄₁₅).

The spelling of 2668759633 in words is "two billion, six hundred sixty-eight million, seven hundred fifty-nine thousand, six hundred thirty-three".