7800704065 has 64 divisors (see below), whose sum is σ = 12756123648. Its totient is φ = 4428979200.

The previous prime is 7800704063. The next prime is 7800704111. The reversal of 7800704065 is 5604070087.

It is a happy number.

It is not a de Polignac number, because 7800704065 - 2¹ = 7800704063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7800704063) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 183672 + ... + 222118.

It is an arithmetic number, because the mean of its divisors is an integer number (199314432).

Almost surely, 2^7800704065 is an apocalyptic number.

It is an amenable number.

7800704065 is a deficient number, since it is larger than the sum of its proper divisors (4955419583).

7800704065 is a wasteful number, since it uses less digits than its factorization.

7800704065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38518.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 7800704065 is about 88321.5945564843. The cubic root of 7800704065 is about 1983.2521516725.

The spelling of 7800704065 in words is "seven billion, eight hundred million, seven hundred four thousand, sixty-five".