2772320165 has 8 divisors (see below), whose sum is σ = 3407925528. Its totient is φ = 2163761920.

The previous prime is 2772320147. The next prime is 2772320183. The reversal of 2772320165 is 5610232772.

It is an interprime number because it is at equal distance from previous prime (2772320147) and next prime (2772320183).

It can be written as a sum of positive squares in 4 ways, for example, as 14915044 + 2757405121 = 3862^2 + 52511^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2772320165 - 2¹⁰ = 2772319141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6761552 + ... + 6761961.

It is an arithmetic number, because the mean of its divisors is an integer number (425990691).

Almost surely, 2^2772320165 is an apocalyptic number.

It is an amenable number.

2772320165 is a deficient number, since it is larger than the sum of its proper divisors (635605363).

2772320165 is a wasteful number, since it uses less digits than its factorization.

2772320165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13523559.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 2772320165 is about 52652.8267522267. The cubic root of 2772320165 is about 1404.7998794687.

The spelling of 2772320165 in words is "two billion, seven hundred seventy-two million, three hundred twenty thousand, one hundred sixty-five".