2855965 has 12 divisors (see below), whose sum is σ = 3987036. Its totient is φ = 1958208.

The previous prime is 2855953. The next prime is 2855989. The reversal of 2855965 is 5695582.

2855965 = T₁₁₉ + T₁₂₀ + ... + T₂₆₅.

2855965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1570009 + 1285956 = 1253^2 + 1134^2 .

It is not a de Polignac number, because 2855965 - 2¹⁹ = 2331677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5584 + ... + 6073.

It is an arithmetic number, because the mean of its divisors is an integer number (332253).

2^2855965 is an apocalyptic number.

It is an amenable number.

2855965 is a deficient number, since it is larger than the sum of its proper divisors (1131071).

2855965 is a wasteful number, since it uses less digits than its factorization.

2855965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11676 (or 11669 counting only the distinct ones).

The product of its digits is 108000, while the sum is 40.

The square root of 2855965 is about 1689.9600586996. The cubic root of 2855965 is about 141.8788393199.

The spelling of 2855965 in words is "two million, eight hundred fifty-five thousand, nine hundred sixty-five".