2765566775 has 12 divisors (see below), whose sum is σ = 3451150392. Its totient is φ = 2198358240.

The previous prime is 2765566763. The next prime is 2765566841. The reversal of 2765566775 is 5776655672.

It is not a de Polignac number, because 2765566775 - 2¹⁴ = 2765550391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2765566775.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 348377 + ... + 356226.

It is an arithmetic number, because the mean of its divisors is an integer number (287595866).

Almost surely, 2^2765566775 is an apocalyptic number.

2765566775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2765566775 is a deficient number, since it is larger than the sum of its proper divisors (685583617).

2765566775 is a wasteful number, since it uses less digits than its factorization.

2765566775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704770 (or 704765 counting only the distinct ones).

The product of its digits is 18522000, while the sum is 56.

The square root of 2765566775 is about 52588.6563338521. The cubic root of 2765566775 is about 1403.6582514062.

The spelling of 2765566775 in words is "two billion, seven hundred sixty-five million, five hundred sixty-six thousand, seven hundred seventy-five".