2662791663 has 16 divisors (see below), whose sum is σ = 4140396800. Its totient is φ = 1521594648.

The previous prime is 2662791647. The next prime is 2662791667. The reversal of 2662791663 is 3661972662.

It is not a de Polignac number, because 2662791663 - 2⁴ = 2662791647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2662791667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1292845 + ... + 1294902.

It is an arithmetic number, because the mean of its divisors is an integer number (258774800).

Almost surely, 2^2662791663 is an apocalyptic number.

2662791663 is a deficient number, since it is larger than the sum of its proper divisors (1477605137).

2662791663 is an equidigital number, since it uses as much as digits as its factorization.

2662791663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2587771 (or 2587757 counting only the distinct ones).

The product of its digits is 979776, while the sum is 48.

The square root of 2662791663 is about 51602.2447476852. The cubic root of 2662791663 is about 1386.0505287160.

The spelling of 2662791663 in words is "two billion, six hundred sixty-two million, seven hundred ninety-one thousand, six hundred sixty-three".