2765506663 has 4 divisors (see below), whose sum is σ = 2817686088. Its totient is φ = 2713327240.

The previous prime is 2765506619. The next prime is 2765506693. The reversal of 2765506663 is 3666055672.

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

It is a cyclic number.

It is not a de Polignac number, because 2765506663 - 2⁹ = 2765506151 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 (2765506693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26089633 + ... + 26089738.

It is an arithmetic number, because the mean of its divisors is an integer number (704421522).

Almost surely, 2^2765506663 is an apocalyptic number.

2765506663 is a deficient number, since it is larger than the sum of its proper divisors (52179425).

2765506663 is an equidigital number, since it uses as much as digits as its factorization.

2765506663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52179424.

The product of its (nonzero) digits is 1360800, while the sum is 46.

The square root of 2765506663 is about 52588.0848006466. The cubic root of 2765506663 is about 1403.6480814214.

The spelling of 2765506663 in words is "two billion, seven hundred sixty-five million, five hundred six thousand, six hundred sixty-three".