2775885 has 16 divisors (see below), whose sum is σ = 5076096. Its totient is φ = 1268928.

The previous prime is 2775863. The next prime is 2775889. The reversal of 2775885 is 5885772.

It is a happy number.

It is not a de Polignac number, because 2775885 - 2¹² = 2771789 is a prime.

2775885 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2775889) 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, 13114 + ... + 13323.

It is an arithmetic number, because the mean of its divisors is an integer number (317256).

2^2775885 is an apocalyptic number.

It is an amenable number.

2775885 is a deficient number, since it is larger than the sum of its proper divisors (2300211).

2775885 is a wasteful number, since it uses less digits than its factorization.

2775885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26452.

The product of its digits is 156800, while the sum is 42.

The square root of 2775885 is about 1666.0987365700. The cubic root of 2775885 is about 140.5401750167.

The spelling of 2775885 in words is "two million, seven hundred seventy-five thousand, eight hundred eighty-five".