2784560065 has 16 divisors (see below), whose sum is σ = 3819883392. Its totient is φ = 1908883584.

The previous prime is 2784560039. The next prime is 2784560071. The reversal of 2784560065 is 5600654872.

It is a cyclic number.

It is not a de Polignac number, because 2784560065 - 2⁷ = 2784559937 is a prime.

It is a Duffinian 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, 150397 + ... + 167893.

It is an arithmetic number, because the mean of its divisors is an integer number (238742712).

Almost surely, 2^2784560065 is an apocalyptic number.

It is an amenable number.

2784560065 is a deficient number, since it is larger than the sum of its proper divisors (1035323327).

2784560065 is a wasteful number, since it uses less digits than its factorization.

2784560065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22056.

The product of its (nonzero) digits is 403200, while the sum is 43.

The square root of 2784560065 is about 52768.9308684571. The cubic root of 2784560065 is about 1406.8642594771.

The spelling of 2784560065 in words is "two billion, seven hundred eighty-four million, five hundred sixty thousand, sixty-five".