2665965 has 16 divisors (see below), whose sum is σ = 4290048. Its totient is φ = 1413696.

The previous prime is 2665939. The next prime is 2665967. The reversal of 2665965 is 5695662.

It is not a de Polignac number, because 2665965 - 2⁵ = 2665933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665967) 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, 2947 + ... + 3743.

It is an arithmetic number, because the mean of its divisors is an integer number (268128).

2^2665965 is an apocalyptic number.

It is an amenable number.

2665965 is a deficient number, since it is larger than the sum of its proper divisors (1624083).

2665965 is a wasteful number, since it uses less digits than its factorization.

2665965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028.

The product of its digits is 97200, while the sum is 39.

The square root of 2665965 is about 1632.7783070582. The cubic root of 2665965 is about 138.6600910908.

The spelling of 2665965 in words is "two million, six hundred sixty-five thousand, nine hundred sixty-five".