2963865 has 32 divisors (see below), whose sum is σ = 5132160. Its totient is φ = 1455104.

The previous prime is 2963837. The next prime is 2963869. The reversal of 2963865 is 5683692.

It is a cyclic number.

It is not a de Polignac number, because 2963865 - 2⁵ = 2963833 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2963869) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14947 + ... + 15143.

It is an arithmetic number, because the mean of its divisors is an integer number (160380).

2^2963865 is an apocalyptic number.

It is an amenable number.

2963865 is a deficient number, since it is larger than the sum of its proper divisors (2168295).

2963865 is a wasteful number, since it uses less digits than its factorization.

2963865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281.

The product of its digits is 77760, while the sum is 39.

The square root of 2963865 is about 1721.5879297904. The cubic root of 2963865 is about 143.6435532057.

It can be divided in two parts, 2963 and 865, that added together give a triangular number (3828 = T₈₇).

The spelling of 2963865 in words is "two million, nine hundred sixty-three thousand, eight hundred sixty-five".