2665084165 has 4 divisors (see below), whose sum is σ = 3198101004. Its totient is φ = 2132067328.

The previous prime is 2665084159. The next prime is 2665084181. The reversal of 2665084165 is 5614805662.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 799362529 + 1865721636 = 28273^2 + 43194^2 .

It is a cyclic number.

It is not a de Polignac number, because 2665084165 - 2⁵ = 2665084133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266508412 + ... + 266508421.

It is an arithmetic number, because the mean of its divisors is an integer number (799525251).

Almost surely, 2^2665084165 is an apocalyptic number.

It is an amenable number.

2665084165 is a deficient number, since it is larger than the sum of its proper divisors (533016839).

2665084165 is an equidigital number, since it uses as much as digits as its factorization.

2665084165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533016838.

The product of its (nonzero) digits is 345600, while the sum is 43.

The square root of 2665084165 is about 51624.4531690167. The cubic root of 2665084165 is about 1386.4481830780.

The spelling of 2665084165 in words is "two billion, six hundred sixty-five million, eighty-four thousand, one hundred sixty-five".