2775002805 has 12 divisors (see below), whose sum is σ = 4810004940. Its totient is φ = 1480001472.

The previous prime is 2775002777. The next prime is 2775002809. The reversal of 2775002805 is 5082005772.

2775002805 is a `hidden beast` number, since 2 + 77 + 500 + 2 + 80 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2140265169 + 634737636 = 46263^2 + 25194^2 .

It is not a de Polignac number, because 2775002805 - 2⁵ = 2775002773 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2775002805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2775002809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30833320 + ... + 30833409.

It is an arithmetic number, because the mean of its divisors is an integer number (400833745).

Almost surely, 2^2775002805 is an apocalyptic number.

It is an amenable number.

2775002805 is a deficient number, since it is larger than the sum of its proper divisors (2035002135).

2775002805 is a wasteful number, since it uses less digits than its factorization.

2775002805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61666740 (or 61666737 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 2775002805 is about 52678.2953881387. The cubic root of 2775002805 is about 1405.2528523365.

The spelling of 2775002805 in words is "two billion, seven hundred seventy-five million, two thousand, eight hundred five".