2865945 has 16 divisors (see below), whose sum is σ = 4855680. Its totient is φ = 1438464.

The previous prime is 2865931. The next prime is 2865949. The reversal of 2865945 is 5495682.

It is not a de Polignac number, because 2865945 - 2⁵ = 2865913 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2865949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5365 + ... + 5874.

It is an arithmetic number, because the mean of its divisors is an integer number (303480).

2^2865945 is an apocalyptic number.

It is an amenable number.

2865945 is a deficient number, since it is larger than the sum of its proper divisors (1989735).

2865945 is a wasteful number, since it uses less digits than its factorization.

2865945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11264.

The product of its digits is 86400, while the sum is 39.

The square root of 2865945 is about 1692.9102161662. The cubic root of 2865945 is about 142.0439095842.

The spelling of 2865945 in words is "two million, eight hundred sixty-five thousand, nine hundred forty-five".