2765616663 has 4 divisors (see below), whose sum is σ = 3687488888. Its totient is φ = 1843744440.

The previous prime is 2765616653. The next prime is 2765616673. The reversal of 2765616663 is 3666165672.

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

It is an interprime number because it is at equal distance from previous prime (2765616653) and next prime (2765616673).

It is not a de Polignac number, because 2765616663 - 2⁵ = 2765616631 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 (2765616613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460936108 + ... + 460936113.

It is an arithmetic number, because the mean of its divisors is an integer number (921872222).

Almost surely, 2^2765616663 is an apocalyptic number.

2765616663 is a deficient number, since it is larger than the sum of its proper divisors (921872225).

2765616663 is an equidigital number, since it uses as much as digits as its factorization.

2765616663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921872224.

The product of its digits is 1632960, while the sum is 48.

The square root of 2765616663 is about 52589.1306545373. The cubic root of 2765616663 is about 1403.6666915425. Note that the first 4 decimals are identical.

The spelling of 2765616663 in words is "two billion, seven hundred sixty-five million, six hundred sixteen thousand, six hundred sixty-three".