2776005 has 16 divisors (see below), whose sum is σ = 4935360. Its totient is φ = 1480464.

The previous prime is 2776003. The next prime is 2776013. The reversal of 2776005 is 5006772.

It is not a de Polignac number, because 2776005 - 2¹ = 2776003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2776005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2776001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10147 + ... + 10416.

It is an arithmetic number, because the mean of its divisors is an integer number (308460).

2^2776005 is an apocalyptic number.

It is an amenable number.

2776005 is a deficient number, since it is larger than the sum of its proper divisors (2159355).

2776005 is a wasteful number, since it uses less digits than its factorization.

2776005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20577 (or 20571 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 2776005 is about 1666.1347484522. The cubic root of 2776005 is about 140.5422001460.

The spelling of 2776005 in words is "two million, seven hundred seventy-six thousand, five".