2775985 has 16 divisors (see below), whose sum is σ = 3525120. Its totient is φ = 2094400.

The previous prime is 2775959. The next prime is 2775989. The reversal of 2775985 is 5895772.

It is not a de Polignac number, because 2775985 - 2¹⁷ = 2644913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2775989) 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, 11496 + ... + 11734.

It is an arithmetic number, because the mean of its divisors is an integer number (220320).

2^2775985 is an apocalyptic number.

It is an amenable number.

2775985 is a deficient number, since it is larger than the sum of its proper divisors (749135).

2775985 is a wasteful number, since it uses less digits than its factorization.

2775985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368.

The product of its digits is 176400, while the sum is 43.

The square root of 2775985 is about 1666.1287465259. The cubic root of 2775985 is about 140.5418626285.

The spelling of 2775985 in words is "two million, seven hundred seventy-five thousand, nine hundred eighty-five".