2665706365 has 16 divisors (see below), whose sum is σ = 3848238720. Its totient is φ = 1731706560.

The previous prime is 2665706357. The next prime is 2665706387. The reversal of 2665706365 is 5636075662.

It is not a de Polignac number, because 2665706365 - 2³ = 2665706357 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2003626 + ... + 2004955.

It is an arithmetic number, because the mean of its divisors is an integer number (240514920).

Almost surely, 2^2665706365 is an apocalyptic number.

It is an amenable number.

2665706365 is a deficient number, since it is larger than the sum of its proper divisors (1182532355).

2665706365 is a wasteful number, since it uses less digits than its factorization.

2665706365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4008612.

The product of its (nonzero) digits is 1360800, while the sum is 46.

The square root of 2665706365 is about 51630.4790312854. The cubic root of 2665706365 is about 1386.5560697191.

The spelling of 2665706365 in words is "two billion, six hundred sixty-five million, seven hundred six thousand, three hundred sixty-five".