6666495065 has 4 divisors (see below), whose sum is σ = 7999794084. Its totient is φ = 5333196048.

The previous prime is 6666495061. The next prime is 6666495079. The reversal of 6666495065 is 5605946666.

6666495065 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 832437904 + 5834057161 = 28852^2 + 76381^2 .

It is a cyclic number.

It is not a de Polignac number, because 6666495065 - 2² = 6666495061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6666494998 and 6666495016.

It is not an unprimeable number, because it can be changed into a prime (6666495061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666649502 + ... + 666649511.

It is an arithmetic number, because the mean of its divisors is an integer number (1999948521).

Almost surely, 2^6666495065 is an apocalyptic number.

It is an amenable number.

6666495065 is a deficient number, since it is larger than the sum of its proper divisors (1333299019).

6666495065 is a wasteful number, since it uses less digits than its factorization.

6666495065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333299018.

The product of its (nonzero) digits is 6998400, while the sum is 53.

The square root of 6666495065 is about 81648.6072447044. The cubic root of 6666495065 is about 1882.0559092884.

The spelling of 6666495065 in words is "six billion, six hundred sixty-six million, four hundred ninety-five thousand, sixty-five".